Michael Jordan of course
Kobe Bryant has 26 game winners and Michael Jordan has 28 (25 with the Bulls and 3 with the Wizards).
Michael Jordan's highest scoring game was 69 points in an overtime contest against the Cavaliers in 1990.
The most Michael Jordan has ever scored in a game was 69 points against the Cavs on March 28, 1990. :)
In most NBA games, you can still use Jordan, even though he stopped playing.