The premise of the sketch is rather weak -- Carl Lewis agreeing to race a wheelchair-bound old man about to be healed by "the world's greatest faith-healer", Reverend Jimmy -- but the comedic brilliance of Eddie Murphy and Joe Piscopo transcend the lame premise and raise the sketch to a higher level of humor.
The best part for me has to be Joe Piscopo's reaction upon hearing Carl Lewis's hubristic and profane declaration that he, Carl Lewis, can "run faster than God . . .