Top 5 Photos, 5/31: No end for Nishikori, no sets lost for Federer

As week one approaches its end, the intense and most-impressive tennis isn't going anywhere. Day 6 was full of memorable moments on the courts of Roland Garros.

1. Kei Nishikori left everything on the court against Laslo Đjere and improved his five-set record to 22-6; the seventh seed recovered from two breaks down to triumph 8-6 over the Serbian in the fifth. Nishikori has the second best deciding-set winning percentage in history, trailing only Bjorn Borg. His coach and former French Open champion Michael Chang may be projecting the same 1989 winning title vibes onto Nishikori.

2. Pablo Carreno Busta dug deep but couldn't withstand France's Benoit Paire due to injury. With Carreno Busta retiring, French hopes to see one of their own win stayed alive. Yannick Noah was the last to achieve the feat in 1983.

3. For Gabrine Muguruza, her eye is on the prize. She played her best tennis of the tournament in her third-round match against Elina Svitolina, letting her racquet do plenty of talking in the 6-3, 6-3 victory.

4. Roger Federer faced two set points but captured his third-round match against Casper Rudd, 6-3, 6-1, 7-6 (8). Federer has not lost a set thus far, minimizing his time on-court for an important push in week two.

5. Cumulus clouds and warm weather bring in another thrilling day of tennis at Roland Garros.