This is one of the nuttiest sports things I have ever seen. Ethan Sherwood Strauss was rewatching a second round game from the 1993 NBA playoffs. Shawn Kemp's Seattle SuperSonics vs. Hakeem Olajuwon's Houston Rockets. Game seven. Overtime. Hakeem has the ball in the closing moments of the game. And suddenly, Strauss spies a sixth player on the court for Houston. The refs missed the extra player and so did most everyone else for the last 19 years. Take a look for yourself...the play in question starts at 16:50:
Number 22 just wanders off the bench and into the game!