Heavyweight champion Mike Tyson, knocked out by a tree in a one-car wreck, will undergo more medical tests as his representatives debate whether he'll be able to defend his title next month.

Tyson, fresh from a unanimous decision over boxer Mitch Green on a Harlem sidewalk two weeks ago, was knocked unconscious for several minutes Sunday when the BMW he was driving skidded into a tree in a friend's yard upstate.Tyson's championship bout against British champ Frank Bruno was recently postponed until Oct. 22 because of the hand injury. Klores said it was not clear if the car accident would affect the fight, but Tyson manager Bill Cayton told the Daily News that "the early reports I've gotten lead me to be positive about his fighting ... next month."