Rafael Nadal isn't blaming anything - including his fragile knee - in the wake of the greatest upset in Wimbledon history. Nadal, seeded no.5 and considered the favorite in the grass court Grand Slam tourney, bowed out in a shocking fashion to Belgian Steve Darcis in straight sets, 7-6 7-6, 6-4 on the first day of the Wimbledon Open.

The sporting world was completely stunned by the news of Nadal's first round exit at Wimbly. The 27-year old Nadal came into the tourney with 22 straight victories around his belt, including a win at the French Open.

However, it was a different story on the court Monday afternoon at All-England club. Nadal, will all his accomplishments on the historic lawn in London, could not muster a shot to swing the tide of momentum that was favoring the unheralded Darcis.

Darcis battled hardly-fought tiebreakers in the first and two sets, before finishing off Nadal in the 10th game of the third set.

Despite the shocking defeat, Nadal refused to blame his knee or an hectic schedule and gave all the credit to Darcis for pulling off one huge upset victory.

"Are you joking? I answered this question three or four times already," he snapped. "I'm not going to talk about my knee. The only thing I can say is that Steve played a fantastic match. Everything I could say about the knee would be an excuse, and I don't like to do that when I lost a match like this. Steve deserves not one excuse," Nadal told reporters during the post-game conference, according to the Telegraph.

Nadal added that life must move on after the loss, believing that sometimes a player has his worst day. For him it was Monday afternoon.

"It is not a tragedy. Life continues. All I can do is congratulate my opponent. Sometimes you play worse and you lose, that is all," Nadal added.