LAS VEGAS (AP) _ Mike Tyson apologized once again today for biting Evander Holyfield's ears during a title bout and promised the Nevada Athletic Commission that he would behave himself if he is allowed to return to the ring.

The commission hearing began with Tyson lawyer Dale Kinsella reading a letter from the former heavyweight champ to commission chairman Dr. Elias Ghanem.

``I acknowledge that I made a mistake and again I apologize for it,'' Tyson said in the letter. ``I assure you this kind of behavior will not repeat itself. Let's put this behind us and allow boxing to be what it should be, the best sport in the world.''

Tyson is nearly broke and can't afford to wait another year to return to the ring, adviser Shelly Finkel says. The commission's ban last year has cost him tens of millions of dollars.