Every four years the summer Olympic Games capture the world's attention. Over 10,000 athletes from more than 200 countries gather to prove they are the best in their sports. From the first competition held in 1896 to the 2012 London Olympics, the games have hosted some of swimming's greatest victories and toughest defeats. Fans have witnessed Johnny Weissmuller win back-to-back Olympic gold medals before he found fame on the big screen as Tarzan; they have seen Dara Torres defy age to win three silver medals at the age of 41; and they will forever remember Michael Phelps capturing a record...