Undefeated French boxer Hassan N’Dam successfully defended his interim WBA middleweight title with a unanimous decision over Giovanni Lorenzo of the Dominican Republic on Saturday. N’Dam (26-0) caught Lorenzo with a big left hook in the third round, then had Lorenzo backing off in the fifth and sixth as Lorenzo struggled to match his tempo. N’Dam scored 119-110, 116-110 and 119-109 on the judges’ cards.