Andre Berto
On January 17, 2009, Collazo fought the undefeated Andre Berto for the WBC Welterweight. Collazo lost a very close fight and a controversial unanimous decision after 12 rounds. Collazo appeared to be ahead most of the fight. The scores were 113-114, 113-114 and the third judge Bill Clancy scored the bout 111-116 which was found by some to be controversial.