Two former Olympic boxing champions, both undefeated...

Two former Olympic boxing champions, both undefeated in their professional careers, will try to extend their streaks today at Atlantic City, N.J.

Tyrell Biggs, 10-0 with seven knockouts, faces Percell Davis, 13-4 with nine knockouts, in a heavyweight fight. In a welterweight match, Mark Breland, 13-0 with eight knockouts, meets Reggie (Too Sweet) Miller, 18-5 with 11 KOs.