Perhaps the greatest wrestler ever, Dan Gable went undefeated as a high schooler, lost just one match in college and did not allow a point in winning a gold medal at the Munich 1972 Olympic Games.
Willie Davenport ran the 100-meter hurdles in four Summer Games and won one gold medal. At the Lake Placid 1980 Olympic Winter Games, he was part of the U.S. four-man bobsled team.