PAUL WILLIAMS AT JR. MIDDLEWEIGHT AND HEAVYWEIGHT CHRIS ARREOLA

The main event features two-time welterweight titleholder Paul Williams (35-1, 26 KOs) of Augusta, Ga., making his debut in the junior middleweight division as he moves up to 154 pounds to take on three-time junior middleweight champ Verno Phillips (42-10-1, 21 KOs) from Denver, in a scheduled 12-round contest. Having regained his welterweight title, Williams now seeks to conquer a new division; he's also the last man to beat the formidable Antonio Margarito. Phillips, a crafty ring veteran, recently outpointed junior middleweight champ Cory Spinks and is determined to stay on top of his division.

The opening bout at the brand-new Ontario venue features rising heavyweight prospects doing battle in a scheduled 12-round bout. Chris Arreola (25-0, 22 KOs) from nearby Riverside, Cal., puts his perfect record on the line against Houston's Travis Walker (28-1, 22 KOs), who boasts a near-perfect mark. Both young fighters have been steamrolling the competition and look to impress in the national spotlight.