Defending WBA interim titlist Keith Thurman , also an undefeated prospect at the time , knocked Bundu down in the first round .
Bundu showed Bundu 's durability by going the full twelve - round distance with the feared puncher .
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 .