In an all-Chicago showdown between former lightweight world champions, David Diaz (35-2-1, 17 KOs) won a majority decision over Jesus Chavez (44-6, 30 KOs) on Saturday night at the UIC Pavilion. It was a very good action fight from start to finish with the fighters often trading shots in the center of the ring. Diaz seemed a little sharper and won 97-93, 96-94 on two cards. The third card was 95-95. It was Diaz’ first fight since losing his WBC belt to Manny Pacquiao 15 months ago. Chavez was returning after a seventh round TKO loss to Michael Katsidis in April.