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O'Leary loses IBO super‑lightweight title to Chamberlain

Updated 2 times since CLSTR started tracking revisions of this situation.

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2026-08-01 19:11 UTC → 2026-08-01 23:17 UTC · added removed

Pierce O'Leary loses IBO super‑lightweight title defense in Dublin to Chamberlain

Irish boxer Pierce O’Leary entered the ring The IBO super‑lightweight world title bout at Dublin’s 3Arena on 1 August 2026 to defend his IBO super‑lightweight title 2026, originally billed as Pierce O’Leary’s defense against British challenger Mark Chamberlain. Chamberlain, ended with Chamberlain winning by a tenth‑round stoppage. After an early knock‑down spree that saw O’Leary down twice, the Irish champion rallied to drop Chamberlain in round 7, but Chamberlain recovered, regained control and forced a referee halt at 1:37 of round 10. The bout, originally postponed from March due result gave Chamberlain an 18‑1‑1 record with 13 stoppages and handed O’Leary his first professional loss, moving his record to Chamberlain’s chest infection, was 19‑1. The event, streamed live on DAZN as the headline of Queensberry Promotions’ “No Turning Back” card. O’Leary, unbeaten at 16‑0 (11 KOs), retained the belt, while Chamberlain, coming off a recent draw, sought to rebound. The event and attended by roughly 8,000 fans, also featured a vacant WBA continental super‑welterweight title fight between Ben Fail and Craig O’Brien and several Irish‑focused match‑ups. Former world champion Steve Collins praised O’Leary’s rise and the strong local support, noting the night’s large crowd atmosphere and extensive media coverage as a boost its significance for Irish boxing. boxing despite the upset.

Versions

  1. 2026-08-01 23:17 UTC O'Leary loses IBO super‑lightweight title to Chamberlain
  2. 2026-08-01 19:11 UTC Pierce O'Leary IBO title defense in Dublin
  3. 2026-07-31 08:56 UTC Pierce O'Leary IBO title defense

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