Five world records were set but Aaron Peirsol failed in swimming championship

Five world records were set Monday at the world swimming championships.No surprise there.Aaron Peirsol failed to make the finals of 100-meter backstroke.Now that’s a stunner.Peirsol, the world record-holder and two-time Olympic champion in the 100-meter backstroke, was stunningly knocked out in the semifinals. He was caught off guard by the lightning-quick times that dealt another…