# Atlanta Braves clinch NL East title after sweeping Astros

> Live situation record from CLSTR: https://clstr.news/situations/atlanta-braves-and-houston-astros-mlb-series
> Updated: 2026-09-18T15:18:41.000Z. Sources: 63. Developments: 2.

The Atlanta Braves clinched the National League East division title following a three-game sweep of the Houston Astros. The milestone was secured on Sunday, September 20, with a 4-2 victory at Daikin Park, marking the franchise’s 24th overall division title and tying them with the Dodgers for the most in MLB history since the divisional format was established.

Offensive highlights from the clinching game included a three-run home run by Mike Yastrzemski in the sixth inning to break a 1-1 tie, and a grand slam by Ronald Acuña Jr. The grand slam helped Acuña reach the “20-20” milestone (20 home runs and 20 stolen bases) for the third time in his career. 

The victory highlights a successful turnaround under first-year manager Walt Weiss, following a 76-86 record last season that saw the team miss the postseason. With the sweep, the Braves improved to a 92-64 record. Following the clinching win, the team is expected to turn to rookie pitcher JR Ritchie for a start in their upcoming three-game homestand against the Cincinnati Reds.

For the Houston Astros, the series loss has diminished their postseason prospects. Additionally, the Boston Red Sox have officially secured an American League wild card berth following the Astros' defeat, following a mid-season turnaround under interim manager Chad Tracy.

## Claims

- The Boston Red Sox clinched a Wild Card spot for the second year in a row following the Astros' loss. (corroborated by 3 sources)
- The Atlanta Braves secured their 24th National League East division title, tying the Dodgers for the MLB record. (corroborated by 2 sources)
- The Braves swept a three-game series against the Houston Astros to clinch the division. (corroborated by 2 sources)
- Mike Yastrzemski hit a decisive 12th home run, a three-run shot in the sixth inning. (corroborated by 2 sources)
- The Red Sox finished with a record of 84 wins and 72 losses. (corroborated by 2 sources)
- Red Sox outfielder Masataka Yoshida faces a potential end to his season due to a left hamstring strain. (single source)

## Timeline

### 2026-09-18: Atlanta Braves clinch NL East title; Red Sox secure playoff berth

The Atlanta Braves clinched the NL East title with a 4-2 win over the Astros, while the Boston Red Sox secured a postseason berth following the Astros' loss.

60 sources. https://clstr.news/cluster/atlanta-braves-face-houston-astros-in-late-season-series

### 2026-09-18: Houston Astros host Atlanta Braves for Hispanic Heritage Weekend

The Houston Astros host the Atlanta Braves from September 18-20, 2026, featuring a Hispanic Heritage Weekend celebration at Daikin Park.

4 sources. https://clstr.news/cluster/houston-astros-host-atlanta-braves-for-hispanic-heritage-weekend

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Cite as: Atlanta Braves clinch NL East title after sweeping Astros. CLSTR, https://clstr.news/situations/atlanta-braves-and-houston-astros-mlb-series