Day 4 was all about one man as legendary Olympian Michael Phelps took to the pool to make Olympic history adding to his collection of 17 medals to become the most decorated Olympian ever.  Phelps tied the previous Olympic record of 18 medals by taking silver in the 200-meter butterfly.  He was beaten to gold by South African Chad Le Clos. 

After recovering from narrowly losing out on on the top spot in the 200-meter butterfly, Michael Phelps broke the record and won his 19th medal by bringing the U.S. team home to gold in the 4x200-meter relay.

Michael Phelps teammates joined celebrities and fans on Twitter to congratulate him on his record setting achievement.

After beating Phelps to gold in the 200-meter butterfly, Chad Le Clos added a cheeky photo to his Facebook page.

After the U.S. men's team failed to get a podium finish in the team gymnastics on Monday, Day 4 of the London Games saw the women's turn.  Only a couple of days after Aly Raisman unexpectedly knocked her roommate Jordyn Wieber out of the all round gymnastics final, the two women joined their teammates McKayla Maroney and Gabby Douglas in the team event. A stunning performance from the American team saw them take the first U.S. Olympic gold medal in women's gymnastics since 1996, with Russia taking silver and Romania the bronze. 

The gold medal winning performance from the U.S. women's gymnastics team received some celebrity support on Twitter.