Claressa Shields UD10 Christina Hammer: Claressa Shields (9-0 3KO) had her best performance in her biggest fight, easily handling previously undefeated longtime middleweight champion Christina Hammer (24-1-1 13KO) to unify the middleweight division. Boxingtalk gave the first round to Hammer, but after that it was all Shields all the time. Shields visibly hurt Hammer with left hooks and right hands in the second half of the bout and was so dominant that Hammer should take a moral victory by simply making it to the final bell. Official scores were 98-92 on all three cards. Boxingtalk scored it 99-91. Source: Showtime.