5 players who have defeated both Roger Federer and Rafael Nadal in Grand Slams

#4 Stan Wawrinka

Australian Open 2014 Final – def. Rafael Nadal 6-3, 6-2, 3-6, 6-3

Wawrinka's boisterous performance denied Nadal his second Australian Open crown

Stan Wawrinka's first major achievement in tennis was the doubles Olympic gold he won with Roger Federer at Beijing 2008. He broke into the top 10 rankings in 2008, and was also the flag bearer for Switzerland at the 2012 London Olympics.

2014 was a breakthrough season for Wawrinka. He defeated Djokovic in a five set thriller in the quarterfinal of the Australian Open and went on to reach the final, where he was up against World No. 1 Rafael Nadal.

Nadal was the clear favorite to the final but Wawrinka had other ideas.

He produced unbelievable tennis to win the first set 6-3, which at first looked like a temporary setback for Nadal. But the Spaniard's situation grew worse as he suffered a back injury in the second set which made him less mobile on the court; he ended up losing the second set 6-2.

Nadal did stage a comeback by winning the third set 6-4, but his injury wasn’t letting him play his natural game. He was broken mid-way through the fourth set and Wawrinka served for the match and won his maiden Grand Slam, reaching a career high World No. 3 ranking in the process.

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French Open 2015 Quarterfinal - def. Roger Federer 6-4, 6-3, 7-6 (7-4)

Stan was at his flamboyant best throughout the 2015 French Open

The 2015 French Open was all about Stan Wawrinka, where he again defeated two of the biggest names (Federer and Djokovic) in tennis. In his quarterfinal match, he absolutely bullied Federer with his powerful groundstrokes, breaking him in the very first game of the first set.

In the second set, he broke Federer twice with his monstrous stroke-play. Although Federer managed to take the third set into a tie-breaker, he was merely delaying the inevitable as Wawrinka went on to win it 7-4.

Wawrinka was flawless throughout the 2015 French Open, and went on to defeat Djokovic in four sets to lift his second Grand Slam trophy.