Michael Phelps tonight wrote yet another chapter in his amazing career with a 16th Olympic gold medal and 20th in total, while Rebecca Soni smashed her own world record.
Michael Phelps claimed the 16th Olympic gold medal of his amazing career and 20th in total with a thrilling victory in the men's 200m Individual Medley.
Nathan Adrian ended James Magnussen's ambition of adding the Olympic title to his world crown when the USA swimmer out-touched him by one one hundredth of a second in the 100m Freestyle final.
Beijing 2008 silver medallist Laszlo Cseh led the way in the men's 200m Individual Medley heats this morning as top swimmers including Michael Phelps progressed through the competition.
Spectators at the Aquatics Centre witnessed drama and history on Day 4 as Michael Phelps became the all-time most decorated Olympic athlete, while Ye Shiwen claimed a second title.
Michael Phelps tonight became the most decorated athlete in Olympic history when his gold in the 4 x 200m Freestyle Relay at the Aquatics Centre took him to 19.