Keith Thurman has lost once in his professional boxing career: to Manny Pacquiao by split decision in July 2019.

Quick scoop

  • Opponent: Manny Pacquiao.
  • Result: Pacquiao won by split decision.
  • Significance: It was Thurman’s first career loss and came in a welterweight title fight.

What that means

Thurman was undefeated before that bout, so when people ask who he “lost to,” the answer is usually just Pacquiao.