Started swimming at seven, national record holder for his age at ten, youngest in sixty-eight years to qualify for the Olympics, youngest to ever break a swimming world record, first man in Olympic history to ever hold a three-peat, current holder of seven swimming world records, not counting being the most decorated Olympian of all time and having the most gold medals ever. 20 years, 4 Olympics, 22 medals, 1 man: Michael Phelps.