Jhonny Gonzalez took down previously undefeated WBC featherweight world champ Abner Mares with a first round knockout at the StubHub Center on Saturday.
Gonzalez (55-8, 47 KOs) dropped Mares with a hook and then again with a barrage of punches.
Mares (26-1-1, 14 KOs) could not get up and the official waved the fight off. Time of the fight was 2:55.
In the WBC super bantamweight bout, Leo "Terremoto" Santa Cruz captured the belt with a knockout over the now former champ Victor Terrazas.
Santa Cruz (25-0-1, 15 KOs) stayed undefeated and was clearly the better of the two fighters, consistently landing shots to the head and body of Terrazas.
Terrazas (37-3-1, 21 KOs) went down twice in the third round and the official called the fight at 2:09 upon seeing the former champ's condition.