He quit after 19 pro bouts (13 wins, 5 losses and 1 draw).
Eight months passed before Stewart fought his second pro bout, in May 1987.
He lost his third pro bout by decision.
In December 2009 he lost his fifth pro bout, leaving him with a pro record of 3-2.
Which was remarkable for someone without Olympic experience or a single pro bout under his belt.
He quit after 34 pro bouts (18 wins, 15 losses and 1 draw).
Before fighting he took his mother to a pro bout.
His first pro bout earned him only $300, but by 1956 he had become a leading heavyweight.
He quit after 12 pro bouts (5 wins, 7 losses).
Different reports have him winning 50 of either 55 or 56 pro bouts.