Rafael Nadal played late into the night -- ending at 2:11 a.m. -- after the two matches on Arthur Ashe Stadium's court preceding his quarterfinal battle with Mardy Fish stretched long past their expected ending times.
2 of 12Bob Martin/SI
Mardy Fish, an unranked American, stole the first set, 6-3, from world No. 1 Rafael Nadal before falling in the next three, 6-1, 6-4, 6-2.
3 of 12Bob Martin/SI
Buoyant throughout his match, Nadal bounced back from his first set loss. "The night session here is unbelievable, but I prefer to finish a little earlier," Nadal said.
4 of 12Bob Martin/SI
Nadal is set to play No. 6 Andy Murray in his semifinal.
5 of 12Bob Martin/SI
Frustrated early in each set, Serena Williams let out a primal scream at one point and rallied for a straight-sets win.
6 of 12Bob Martin/SI
Serena improved to 9-8 against her older sister, Venus, in 17 professional matches versus each other.
7 of 12Jessica Kluetmeier/SI
Serena's aggressiveness served her well as she continued to run down Venus's volleys.
8 of 12Jessica Kluetmeier/SI
The younger Williams expressed relief in defeating Venus and moving on to the next round.
9 of 12Jessica Kluetmeier/SI
Venus Williams was able to gain advantages in both sets but failed to finish off her sibling.
10 of 12Bob Martin/SI
Great Britain's Andy Murray popped the cork on his first semifinal berth in a Grand Slam.
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Juan Martin Del Potro, whose last name translates to "Colt", entered the Open as the dark horse and exited in the fourth set of his quarterfinal match with Andy Murray.
12 of 12Bob Martin/SI
Dinara Safina, the women's sixth seed who hails from Russia, advanced to play Serena in the semifinals.
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