Keith Thurman
Bundu defended his European title six times, as well as winning the Commonwealth title against undefeated contender and decorated amateur Frankie Gavin. In their fight, on 1 August 2014, Bundu scored a surprise sixth-round knockdown with a hard body shot, and would go on to win by split decision. Later in the year, on 13 December, Bundu challenged unsuccessfully for his first major world championship in his first visit to the United States. Defending WBA interim titlist Keith Thurman, also an undefeated prospect at the time, knocked Bundu down in the first round, but Bundu showed his durability by going the full twelve-round distance with the feared puncher. In doing so, Bundu suffered his first professional loss via UD.