[PERSON]
Mark Chamberlain
Featured in 3 tracked stories · first seen
Situations
O'Leary loses IBO super‑lightweight title to Chamberlain
3 clusters · 18 sources · last updated
Latest: Mark Chamberlain captures IBO junior welterweight title in Dublin
The IBO super‑lightweight world title bout at Dublin’s 3Arena on 1 August 2026, originally billed as Pierce O’Leary’s defense against Mark Chamberlain, ended with Chamberlain winning by a tenth‑round stoppage. After an e