# Japanese high school baseball 2026 – Koshien tournament

> Live situation record from CLSTR: https://clstr.news/situations/japanese-high-school-sports-championships
> Updated: 2026-08-31T03:40:00.000Z. Sources: 93. Developments: 46.

The 108th National High School Baseball Championship concluded with Chiben Wakayama securing its fourth national title, their first in five years, after a 4-3 victory over Kenda Takasaki in the final at Koshien Stadium.

In the championship game, Chiben Wakayama took an early 2-0 lead but fell behind 3-2 in the eighth inning following a two-run home run by Kenda Takasaki’s Yusei Ishida. Chiben Wakayama tied the game in the bottom of the eighth with a squeeze play and ultimately won via a walk-off error caused by a catcher’s dropped third strike and a subsequent passed ball. The winning pitching rotation included Kaito Nagai, Shota Wake, and Ryota Kuba. Chiben Wakayama manager Hitoshi Nakatani, a former NPB catcher, became only the third manager with professional experience to win the championship twice. Nakatani attributed the victory to the collective support of the school and community, noting that the team utilized a unique mental preparation strategy by practicing their victory song and post-game celebrations for 90 days leading up to the tournament.

Throughout the tournament, the event highlighted deep community ties, such as Yokote High School’s use of a custom theme song, ‘Fight oh! YOKOTE’, and the participation of the Aozora Special Needs School team. Chiben Wakayama’s path to the title included a dramatic 11-inning tiebreaker victory against Tsuruga Kehi, where Kazumasa Kawahara hit both the equalizer and the winning run.

Other notable tournament results included Kenda Takasaki defeating Sano Nichidai in a ‘North Kanto Derby’ and Yokohama High School defeating Nichinan Gakuen 10-1. Yokohama's Shoki Oda continues to attract significant interest from NPB and MLB scouts and has been named to the 18-player roster for the U-18 Asia Baseball Championship in Taiwan.

## Claims

- Okayama Gakugeikan defeated Kurashiki Shou 5‑4 to win its third consecutive and fifth overall summer Koshien ticket. (disputed)
- Sano Nitta High School won the Tochigi tournament 5‑4 with a walk‑off home run, returning to Koshien for the first time in sixteen years. (disputed)
- Yawata Commercial High School qualified for the 108th Summer Koshien for the first time in 15 years. (disputed)
- The 108th National High School Baseball Championship opened on August 5, 2026 at Hanshin Koshien Stadium in Nishinomiya, Hyōgo Prefecture. (corroborated by 4 sources)
- The online draw for the 108th Summer Koshien matchups was held on August 1, 2026. (corroborated by 3 sources)
- The 108th National High School Baseball Championship runs from August 5 to August 22, 2026, lasting 18 days. (corroborated by 3 sources)
- Oita Commercial High School departed for the 108th Summer Koshien on July 31, 2026. (corroborated by 2 sources)
- The opening ceremony was held at 16:00 on August 5, 2026. (corroborated by 2 sources)
- East Japan International Daichome (東日本国際大昌平) won its first Koshien game after a video-review overturn. (corroborated by 2 sources)
- East Sea Kofu (東海大甲府) achieved its first-round victory for the first time in 11 years, beating Tsuruga East 5-2. (corroborated by 2 sources)

## Timeline

### 2026-08-31: Shoki Oda draws attention following high-speed pitch at Koshien

Yokohama High School pitcher Shoki Oda is garnering praise for his potential as a future ace after recording a 157 km/h pitch at Koshien.

3 sources. https://clstr.news/cluster/shoki-oda-draws-attention-following-high-speed-pitch-at-koshien

### 2026-08-22: Chiben Wakayama wins 4th summer Koshien title

Chiben Wakayama won its fourth summer Koshien title by defeating Kenda Takasaki 4-3, utilizing strategic data-driven play to secure a dramatic comeback victory in the final.

19 sources. https://clstr.news/cluster/chiben-wakayama-wins-4th-national-high-school-baseball-title

### 2026-08-20: Koshien Championship: Kenda Takasaki and Chiben Wakayama set for final

Kenda Takasaki and Chiben Wakayama will face off in the final of the 108th National High School Baseball Championship at Koshien, highlighting new trends in training and player scouting.

16 sources. https://clstr.news/cluster/kenda-takasaki-reaches-first-summer-koshien-final-after-defeating-tenri

### 2026-08-18: Chiben Wakayama and Tenri advance to Koshien semifinals

Chiben Wakayama, Tenri, Yokohama, and Kenda Takasaki have advanced to the semifinals of the 108th National High School Baseball Championship.

11 sources. https://clstr.news/cluster/tenri-and-chiben-wakayama-advance-to-high-school-baseball-semifinals

### 2026-08-16: Koshien tournament reaches quarterfinals with eight teams remaining

The 108th National High School Baseball Championship has reached the quarterfinals. Key winners include Ariake, Yokohama, Hanamaki Higashi, and Tenri, as the tournament navigates extreme heat challenges.

12 sources. https://clstr.news/cluster/hanamaki-higashi-advances-to-koshien-quarterfinals

### 2026-08-14: Japanese high school sports: Baseball and handball championship updates

Major updates from Japanese high school sports: Chiben Wakayama reaches the baseball best eight via a tiebreaker, Ken Dai Takasaki wins the North Kanto Derby, and Showa Gakuin wins the handball title.

10 sources. https://clstr.news/cluster/naruto-uzushio-eliminated-leaving-only-private-schools-in-koshien-best-16

### 2026-08-13: Koshien baseball tournament highlights student dedication and community spirit

High school baseball at Koshien highlights diverse human stories, from Yokote High School’s unique brass band themes to the resilient journey of the Aozora Special Needs School baseball team.

2 sources. https://clstr.news/cluster/koshien-baseball-tournament-highlights-student-dedication-and-community-spirit

### 2026-08-12: High School Baseball Championship: Higashi Nihon International University Shohei advances

The 108th National High School Baseball Championship sees Higashi Nihon International University Shohei advance with a 6-2 win, while Kensai Takasaki and Sendai Ikuei also secure victories.

8 sources. https://clstr.news/cluster/saga-commercial-high-school-eliminated-from-koshien

### 2026-08-10: High School Baseball: Oita Commercial and Nichinan Gakuen secure tournament victories

The 108th National High School Baseball Championship sees Oita Commercial win its first opening round in 29 years, while Nichinan Gakuen secures a walk-off victory for Miyazaki.

6 sources. https://clstr.news/cluster/nichinan-gakuen-advances-to-koshien-second-round-with-walk-off-win

### 2026-08-09: Koshien Championship: Yokohama advances while Yokote ace draws attention

At the 108th National High School Baseball Championship, Yokohama defeated Okinawa Shogaku 7-2, while Chigara Kibi beat Yokote 10-0 despite a standout 161-pitch performance by Yokote's ace.

11 sources. https://clstr.news/cluster/meitoku-gijuku-manager-shiro-mabuchi-targets-discipline-at-koshien

### 2026-08-07: Kendo Takasaki defeats Yawata Shō 7-1 to advance in 2026 Summer Koshien

Kendo Takasaki beat Yawata Shō 7‑1 at Koshien, advancing in the 2026 high‑school baseball championship; pitcher Satoshi Ishigaki struck out 11.

2 sources. https://clstr.news/cluster/kendo-takasaki-defeats-yawata-sh-7-1-to-advance-in-2026-summer-koshien

### 2026-08-07: Koshien Baseball Championship: Teams advance in 108th tournament

The 108th National High School Baseball Championship progresses at Koshien, with Hanamaki Higashi, Okayama Gakugeikan, and Naruto Uzushio securing key victories to advance to the second round.

18 sources. https://clstr.news/cluster/tkai-university-kofu-wins-firstround-at-koshien-defeating-tsuruoka-east

### 2026-08-05: 108th National High School Baseball Championship kicks off in Japan

The 108th National High School Baseball Championship opened Aug 5‑22, 2026 at Koshien, featuring video‑review tech, public viewings, first‑time entrants Kumamoto Ariake and Yokote, and sold‑out tickets for the

18 sources. https://clstr.news/cluster/2026-koshien-high-school-baseball-interviews-with-former-stars

### 2026-08-02: Yokohama High School faces defending champion Okinawa Shogaku in opening match of 108th Koshien tournament

Yokohama High School meets defending champion Okinawa Shogaku in the opening round of the 108th Koshien tournament, with ace pitcher Oda Shoki pledging to stick to fundamentals.

2 sources. https://clstr.news/cluster/yokohama-high-school-faces-defending-champion-okinawa-shogaku-in-opening-match-of-108th-koshien-tour

### 2026-07-31: Koshien 108th Championship draw sets first‑round matchups

Koshien’s 108th championship draw reveals first‑round pairings, including Nagasaki Nittaidai vs Rissho Daisho, Meitoku Gijuku vs Miyazaki Nankai, and a V‑candidate clash between Okinawa Shogaku and Yokohama.

14 sources. https://clstr.news/cluster/japanese-high-school-teams-depart-for-summer-koshien-tournament

### 2026-07-26: Kanto Daiichi Secures Third Consecutive Ticket to Summer Koshien

Kanto Daiichi beat Nissho Gakusha 10‑4 to claim its third straight East Tokyo title and a spot in the summer Koshien, with pitcher Ishii Shō throwing 112 pitches.

12 sources. https://clstr.news/cluster/japanese-school-teams-win-city-basketball-tournament-and-debut-at-koshien-baseball-championship

### 2026-07-26: Japanese high school baseball crowns regional champions and secures Koshien berths

Regional high school baseball tournaments in Japan produce several Koshien qualifiers, including Yokohama's 11‑1 win, Oda's 157 km/h pitching, and walk‑off triumphs by Yugakukan and Sano Nitta.

13 sources. https://clstr.news/cluster/hachioji-jissen-earns-first-koshien-berth-tochigi-middle-school-claims-74-year-old-softball-crown

### 2026-07-24: Japan's 2026 Koshien Field Finalized as 22 Schools Secure Berths

Japan's summer Koshien field is set with 22 schools, including repeat champions Matsushogakuen and Hanamaki Higashi, and first‑time entrants Ariake and Higashi‑Nihon Kokusai Daichōhei, after regional finals on

15 sources. https://clstr.news/cluster/japanese-high-school-baseball-tournaments-produce-surprising-wins-and-finals-appearances

### 2026-07-22: Japanese high‑school baseball teams clinch regional wins and head for the Koshien tournament

Yokote, Teikyo Nagaoka, Yokohama and other high‑school teams earned regional titles, securing Koshien spots in a season of nationwide baseball action.

14 sources. https://clstr.news/cluster/japans-high-school-baseball-regional-finals-crown-new-koshien-qualifiers

### 2026-07-21: Shiga high school baseball semi-finals: Omi loses, Hikone reaches final

Omi lost 2‑5 to Hikone Sogo in the Shiga high school baseball semi‑finals, while Yawata Commercial and Shiga Junior College battled for the other final spot.

2 sources. https://clstr.news/cluster/hikone-sogo-high-advances-to-semifinals-in-shiga-highschool-baseball-tournament

### 2026-07-21: Akita high school teams shine in national baseball and inter‑high championships

Akita baseball duo delivers clutch hits to win tournament; 413 Akita athletes head to Kinki Inter‑High in 28 events, targeting top finishes.

2 sources. https://clstr.news/cluster/akita-high-school-teams-shine-in-national-baseball-and-interhigh-championships

### 2026-07-19: Japan high school baseball semifinals spotlight regional powerhouses

Regional high school baseball semifinals across Japan feature Niigata’s four‑team showdown, Kyoto’s two‑way star, Yamanashi’s tight 5‑4 win, a new junior‑high Giants Cup lineup, and a comeback story of pitcher‑

6 sources. https://clstr.news/cluster/yamanashi-gakuins-haruki-komoda-sees-backtoback-koshien-hopes-end-after-semifinal-loss

### 2026-07-19: Japan high school baseball summer 2026 regional tournaments

Japan’s 2026 high‑school baseball summer championships saw regional playoffs across Yokohama, Kochi, Mie, Shiga, Nara, Iwate, Fukui, Tokyo, Nagasaki and Tochigi, featuring upsets, cold losses, a dramatic Tokyo

11 sources. https://clstr.news/cluster/high-school-baseball-quarterfinals-underway-in-fukui-and-tokyo-prefectures

### 2026-07-18: Okinawa Shogaku Secures Second Straight Title at National High School Baseball Championship

Okinawa Shogaku won the Okinawa leg of the 108th National High School Baseball Championship, beating Energetic Sports for a second straight title, with key pitching performances from Shigaki and Matsuzaki.

3 sources. https://clstr.news/cluster/okinawa-shogaku-secures-second-straight-title-at-national-high-school-baseball-championship

### 2026-07-17: Koshien History Museum releases guide and schedules 2026 summer baseball exhibition

Koshien History Museum launched a free online guide and will host a July‑August 2026 exhibition on high‑school baseball, highlighting Okinawa teams and the 108th tournament.

2 sources. https://clstr.news/cluster/koshien-history-museum-releases-guide-and-schedules-2026-summer-baseball-exhibition

### 2026-07-16: 2026 Japanese High School Baseball Tournament Advances with Regional Upsets and Strong Performances

Regional high school baseball tournaments in Japan see upsets and strong showings as teams like Osaka Kōrin fall, Nagano final four set, and Oshima reaches the top eight for the first time in four years.

15 sources. https://clstr.news/cluster/japanese-high-school-baseball-shines-in-akita-and-tokyo-tournaments

### 2026-07-14: Japan's 108th Summer High School Baseball Championship Progresses

Japan's 108th high school baseball championship moved forward with Yokohama's 8‑1 win in Kanagawa, Niigata's round‑of‑16 completed, Kyoto International's 3‑2 comeback, and an upset in Tochigi.

10 sources. https://clstr.news/cluster/japanese-high-school-baseball-sees-regional-and-national-tournament-action-in-july-2026

### 2026-07-12: Japanese high school baseball tournaments in Okinawa and Tochigi attract nationwide interest

Japan's 2026 high school baseball tournaments in Okinawa and Tochigi showcase intense competition and a dramatic twins rivalry, drawing broad local attention.

4 sources. https://clstr.news/cluster/japanese-high-school-baseball-tournaments-in-okinawa-and-tochigi-attract-nationwide-interest

### 2026-07-12: Unseeded Oki Gakuen Upsets Seeded Chikuho in Fukuoka High School Baseball Tournament

Unseeded Oki Gakuen beat seeded Chikuho 1‑0 in Fukuoka's high school baseball tournament; Tokai U‑Fukuoka, Higashi‑Tsu and Fukuoka U‑Ōhori also secured wins.

2 sources. https://clstr.news/cluster/unseeded-oki-gakuen-upsets-seeded-chikuho-in-fukuoka-high-school-baseball-tournament

### 2026-07-11: Shiga High School Baseball: College Affiliate Beats Zenjo, Ko-nishi Wins

Shiga's high school baseball tournament saw the college‑affiliated school defeat Zenjo and Ko‑nishi rally for a 5‑2 comeback win over Ishiyama.

5 sources. https://clstr.news/cluster/kyoto-and-shiga-high-school-baseball-qualifiers-see-notable-wins-and-upsets

### 2026-07-11: Japanese high school baseball regional tournaments advance dozens of teams

Regional rounds of Japan's high school baseball championship advanced dozens of teams, with North Hokkaido's four schools, Ehime's upset, and Shizuoka's best‑32 set for the next stage.

8 sources. https://clstr.news/cluster/shiga-prefecture-hosts-round2-high-school-baseball-games-on-july-12-2026

### 2026-07-11: Kanagawa High School Baseball Championship Advances to Third Round

Kanagawa’s high school baseball championship moved to its third round on July 14, 2026, featuring Kirikō Gakuen vs. Sagamihara YaEi; scouts spotlighted local pitchers Zaki‑yama Nōkatsu and Shinhō Haru as draft‑

2 sources. https://clstr.news/cluster/kanagawa-high-school-baseball-championship-advances-to-third-round

### 2026-07-09: Japan's high school baseball regional qualifiers see second‑round action

July 11‑13, 2026: Second‑round games of Japan’s 108th high‑school baseball qualifiers took place in Shiga, Niigata, Kagawa, Toyama, Akita, Tochigi and Fukui, deciding advancing teams for the national Koshien.

9 sources. https://clstr.news/cluster/japan-high-school-baseball-tournaments-see-comeback-victories-in-toyama-and-tochigi

### 2026-07-08: Japanese high schools see badminton triumphs and baseball upset in recent tournaments

Yokohama HS excelled in badminton, volleyball and other sports, while Kinasu Agricultural HC suffered a first‑round upset in the Akita high‑school baseball championship.

3 sources. https://clstr.news/cluster/japanese-high-schools-see-badminton-triumphs-and-baseball-upset-in-recent-tournaments

### 2026-07-08: Shiga high school baseball tournament sees Mizukuchi’s loss and Rittō pitcher’s 111 pitches

The Shiga high school baseball tournament on July 9 featured Mizukuchi High’s surprising loss and Rittō High’s third‑year pitcher throwing 111 pitches.

4 sources. https://clstr.news/cluster/shiga-high-school-baseball-tournament-sees-mizukuchis-loss-and-ritt-pitchers-111-pitches

### 2026-07-08: Japanese high school baseball and soccer competitions held in 2026

2026 high‑school baseball’s third‑round Ichigo vs Yokohama match and a U‑16 Hokkaido soccer game where GVS Hokkaido Science University won 4‑1 are reported, with scores and upcoming fixtures.

3 sources. https://clstr.news/cluster/japanese-high-school-baseball-and-soccer-competitions-held-in-2026

### 2026-07-07: Japanese high school baseball tournaments begin across regions

Regional rounds of Japan's 108th high school baseball championship were held in Tokyo (July 6), Kyoto (July 9) and Tochigi (July 10) as teams vie for spots in the national tournament.

4 sources. https://clstr.news/cluster/japans-high-school-baseball-championship-regional-wins-in-tokyo-and-kyoto

### 2026-07-05: Regional high school baseball tournaments advance in Shizuoka and Miyazaki

Shizuoka and Miyazaki high school baseball tournaments saw tight matches, with Shizuoka schools advancing and Miyazaki Minami beating Monogawa to reach the next round of the summer Koshien qualifiers.

2 sources. https://clstr.news/cluster/regional-high-school-baseball-tournaments-advance-in-shizuoka-and-miyazaki

### 2026-07-05: Shiga high school baseball opening and Tokyo senior karate championship held on July 5, 2026

Japan’s July 5, 2026 sports calendar featured the opening of the high school baseball tournament in Shiga and the senior karate championship in Tokyo.

2 sources. https://clstr.news/cluster/shiga-high-school-baseball-opening-and-tokyo-senior-karate-championship-held-on-july-5-2026

### 2026-07-04: Japan's 108th National High School Baseball Tournament Begins Across Prefectures

Japan's 108th high school baseball championship kicked off in July across Mie, Shizuoka, Kanagawa, Oita and Okinawa, with opening games, ceremonies and rivalries shaping the national qualifiers.

6 sources. https://clstr.news/cluster/high-school-baseball-tournaments-begin-in-shizuoka-and-kanagawa

### 2026-06-30: Japan's summer high school baseball tournaments spotlight Kyoto clash and star slugger Kazuhiro Iwahashi

Kyoto's summer high‑school baseball tournament starts 4 July with top seed schools, while Shukutoku’s senior outfielder Kazuhiro Iwahashi prepares for his final summer, aiming to exceed his prior home‑run tally

2 sources. https://clstr.news/cluster/japans-summer-high-school-baseball-tournaments-spotlight-kyoto-clash-and-star-slugger-kazuhiro-iwaha

### 2026-06-25: Japanese high school baseball summer tournament draws announced

Japan's regional high school baseball tournaments for summer 2026 have released draws, featuring women's games in Hokkaido‑Tohoku and men's draws in Iwate, Toyama and Osaka ahead of the Koshien championship.

5 sources. https://clstr.news/cluster/japans-iwate-and-kanagawa-high-school-baseball-tournament-draws-announced

### 2026-06-22: Shiga and Iwate host high school baseball draws and friendly matches

Shiga held its high‑school baseball tournament draw on June 23, while Iwate’s renovated field hosted friendly matches and a youth baseball clinic on June 20‑21, featuring teams from four prefectures.

3 sources. https://clstr.news/cluster/shiga-and-iwate-host-high-school-baseball-draws-and-friendly-matches

### 2026-06-19: Japan sets regional high school baseball draws for Shizuoka and Kumamoto

Japan's Shizuoka and Kumamoto prefectures announced the draw for this summer's high‑school baseball tournament, detailing participating schools, match‑ups, opening dates and venues.

3 sources. https://clstr.news/cluster/japan-sets-regional-high-school-baseball-draws-for-shizuoka-and-kumamoto

### 2026-06-13: Japanese high school baseball and tennis tournaments report results

Uemizo faced Kanazawa in a second‑round high school baseball game, while Yachiyo Matsushin Academy’s second‑year tennis players secured top spots at the June 14 district cup.

3 sources. https://clstr.news/cluster/japanese-high-school-baseball-and-tennis-tournaments-report-results

### 2026-05-31: Japanese high schools capture multiple regional titles across baseball, badminton and basketball

Yokohama high schools won regional titles in baseball, badminton and other sports, while Fukuoka Daïhōri secured a third straight basketball championship in the prefectural tournament.

2 sources. https://clstr.news/cluster/japanese-high-schools-capture-multiple-regional-titles-across-baseball-badminton-and-basketball

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Cite as: Japanese high school baseball 2026 – Koshien tournament. CLSTR, https://clstr.news/situations/japanese-high-school-sports-championships