Obinna Anyanwu -- a top H.S. basketball star who has offers from Arizona and USC -- was injured in a serious car crash this weekend ... just hours after his team's championship game.
The tragic scene went down in San Diego ... where the teenager was reportedly driving home from a friend's house shortly after leading his Cathedral Catholic squad to the Open Division boys basketball title Saturday.
Anyanwu was driving on the 163 when a car forced him to crash into a guard rail, according to the San Diego Union-Tribune.