Under threatening skies and in front of a hostile crowd, IBF super flyweight champion Vic Darchinyan knocked out WBA/WBC champ Cristian Mijares to unify the three title belts Saturday on SHOWTIME CHAMPIONSHIP BOXING.

Darchinyan (31-1-1, 25 KOs), who had been previously known for his wild boxing style, used combinations, smart defense and polished boxing skills to control the fight and KO the heavily favored Mijares (35-4-2, 13 KOs) at the Home Depot Center in Carson, Calif.

Mijares never seemed comfortable against the sharp Darchinyan. The crafty Mijares started the fight with a smirk that Darchinyan quickly whipped away with a first round knockdown. Mijares struggled to establish his jab and get into a rhythm.

Entering the ninth, Darchinyan was leading on all three judges scorecards (79-72 on all) and dictating the pace of the fight.

In the closing seconds of the 9th, Darchiyan used a solid right jab to set up a devastating straight left that landed flush to Mijares' face knocking him to the canvas. The ringside physician immediately ran into the ring to attend to the fallen Mijares and the fight was called off at 3:00 of the ninth without a 10 count.

In the co-feature, world ranked contender Andre Dirrell kept his perfect record in tact and continued his climb in the super middleweight rankings with a sixth round KO victory over Victor Oganov.

In what was his most exciting performance as a professional, Dirrell (17-0, 12 KOs) controlled the fight from the opening bell. The WBO No. 7 ranked contender's hand speed proved too much for the WBO No. 6 ranked Oganov (28-2, 28 KOs), who didn't land the solid left hooks that he needed to stop the speedy Dirrell.

Entering the sixth round, Dirrell was ahead on all the scorecards and had opened a gushing cut over Oganov's right eye. Dirrell landed a punishing uppercut followed by a powerful right hook, forcing referee Ray Corona to end matters 28 seconds into the round. Oganov missed wildly with many of his punches as Dirrell put on an exhibition against the previously once-beaten Oganov.

SHOWTME Replay: Wednesday, Nov. 5 at 11 p.m. ET/PT on SHO 2