Rod Serling's The Twilight Zone The Big Tall Wish

Bolie Jackson, a washed-up boxer, is about to be knocked down and counted out. Suddenly he finds that he has swapped places and is now standing over his knocked-out opponent. Henry, a young neighbour with magical powers just made the tallest wish he could come up with - for Bolie to win the match. But will Bolie accept this wish?