Undefeated O'Leary faces Chamberlain for IBO light-welterweight title in Dublin on August 1

Undefeated "Big Bang" Pierce O'Leary meets Mark Chamberlain (17-1) for the IBO light-welterweight belt at Dublin's 3Arena on Saturday, August 1, live on DAZN. The bout, billed "No Turning Back," was rescheduled from March after a chest infection forced Chamberlain out. Chamberlain arrives off a draw against Jack Rafferty, widely called a fight-of-the-year contender.