1912:Harry Hebner, USA, 1:21.2
2008:Aaron Peirsol, USA, 52.54
Goggles, swimsuits, swim caps and even the timers used to measure the events have no doubt helped athletes swim faster. But 100 meters is still 100 meters, and a near 30-second improvement over such a short distance attests to how world athletes have evolved since the Stockholm games.
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