Banc of California Stadium - Super lightweight contender Arnold Barboza Jr. (22-0, 9 KOs) dished out a sustained beating to Ricky Sismundo, and Sismundo's corner stopped the bout following the conclusion of the fourth round. (photos by Mikey Williams).

Welterweight contender Chris van Heerden (28-2-1, 12 KOs) continued his march up the rankings, overcoming a bad a cut to defeat Aslanbek Kozaev (33-3-1, 8 KOs) via eight-round unanimous decision (79-73 2x and 78-74). van Heerden has won five straight since a 2015 defeat to Errol Spence Jr.

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Former junior featherweight world champion Jessie Magdaleno is ready to take on the featherweight titans. In his second bout since moving up in weight, Magdaleno scored a ninth-round technical decision over Rafael Rivera after an elbow opened up a gash on the bridge of Magdaleno's nose.

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Magdaleno knocked down Rivera early in the ninth round and prevailed by scores of 89-81, 89-81 and 88-82.

Emanuel Navarrete was already a champion. He is now one of the sport's elite. Navarrete knocked out the previously unbeaten Francisco "Panchito" De Vaca in three rounds Saturday evening.

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Navarrete (28-1, 24 KOs), who upset Isaac Dogboe to win the title and then defeated him in an immediate rematch, knocked down De Vaca (20-1, 6 KOs) in the second round and forced the referee to stop the fight after dishing out a sustained beating in the third.

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