Robredo has reached the French Open quarterfinals four times before, but never gone farther.
In the lead-up to the French Open, Nadal also struggled against Ernests Gulbis, another big hitter.
Odds are this won't be the year the French Open returns to its little-guy roots.
Nine of the last 12 French Open finals have featured at least one Spaniard.
Still active, he just won the Senior Doubles title at the 2012 French Open.
Federer had already won this year's French Open and Wimbledon titles and was Australian Open runner-up.
Ballesteros, a four-time winner of the French Open, was making his first appearance since last October.
At the French Open, Djokovic saved four match points in the quarterfinals against Tsonga.
Czech Jiri Vanek downed former French Open winner Albert Costa, seeded eighth, 7-6 (7-4) 6-3.
"I haven't played that well in a long time, " said the 2009 French Open champion.
None of the five Kazakh players in the French Open was born in Kazakhstan.
Why the French Open, of course, the only Grand Slam tournament Djokovic has yet to win.
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Serbia's 2008 French Open champion will next play Dutch world No. 91 Michaella Krajicek.
In the women's section, 16-year-old Ashleigh Barty stunned former French Open champion Francesca Schiavone 6-0 6-3.
There are comebacks, there are shocks, and then there is Tommy Robredo at this year's French Open.
Sharapova, the reigning French Open champion, lost to Serena Williams in straight sets in the Spanish capital.
With the French Open five weeks away, Djokovic has chosen a good time to buck the trend.
The two-time French Open finalist says Murray just needs to appreciate the patience required on the surface.
Ivanovic has struggled to recapture the form that saw her win the French Open four years ago.
Sam Stosur rounded off Tuesday's play with a 6-4 6-4 win over French Open champion Francesca Schiavone.
Argentine Agustin Calleri (16) earlier defeated last year's finalist and French Open champion Albert Costa 6-4 6-2.
Last year's French Open finalist Sara Errani defeated 64th-ranked Jamie Hampton 6-2 6-1 in the opening match.
Williams won the Madrid title last week and next faces French Open champion Li Na of China.
But as Monfils has shown, patience just might be the most important skill at this year's French Open.
"It hasn't been working out for me, " said Williams, referring to her past performances at the French Open.
Garcia once led Maria Sharapova, the reigning French Open champion, by a set and break at the tournament.
And for all her success on clay of late, Williams still hasn't won the French Open since 2002.
Williams had been a favorite to win the French Open singles title before a shocking first-round upset Tuesday.
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"I really want to see those guys play in the final, " said two-time French Open champion Jim Courier.
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The French Open, the second grand slam tournament of the tennis season, begins in Paris on May 24.
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