The competition at Roland Garros is getting fierce now that the preliminary rounds are out of the way at the 2013 French Open.
Most of the top seeds have advanced to the men's and women's quarterfinal matches, though there were a few casualties along the way.
Now is the time when legends are made—now is the time true champions begin to emerge.
Only the best of the best will move on to the semifinals, and the fans who make their way to the courts in the next couple of days will surely be treated to some excellent matches.
With that in mind, here's a look at the juiciest matchups on the schedule for the men's and women's quarterfinals.
This match could be epic.
Federer has been a top dog on the ATP Tour for over a decade. He's won 17 Grand Slam events, 76 total tournaments and is certainly one of the all-time greats in tennis history.
Tsonga, on the other hand, has just 10 career titles to his name and has never won a Grand Slam event.
It would seem Federer has a huge advantage over Tsonga, given his experience and past history, but in reality, this match could easily go either way.
The last time Tsonga faced Federer, he nearly beat him in a five-set match in the quarterfinals of the Australian Open. The match took 214 minutes to complete, and both players were spent afterwards.
Tsonga defeated Federer in the 2011 Wimbledon quarterfinals in another five-set match, and nobody should be surprised to see these two duke it out in similar fashion on Tuesday.
They'll be featured on centre court, according to Roland Garros on Twitter:
Tsonga, as the hometown hero, will have plenty of support, but as we saw from Federer's fourth-round match against Gilles Simon, he's just as treasured by the masses as any Frenchman.
The winner of this match will move on to face the winner of the match between David Ferrer and Tommy Robredo in the semifinals.
Agnieszka Radwanska vs. Sara Errani
The winner of this match will face Serena Williams in the semifinals.
Williams has only lost 10 total games thus far at Roland Garros, and it's unlikely unseeded Svetlana Kuznetsova will manage to fare any better than the other players Williams has dispatched.
Therefore, it'll be up to one of these two ladies to step up to the plate and deliver a home-run performance in order to derail the Williams bullet train.
Throughout their careers, Radwanska and Errani have faced one another six times. Radwanska has won five of those matches, but Errani's one victory came on a clay surface.
Both women have been playing stellar tennis at Roland Garros thus far.
Radwanska hasn't lost a set and has been dominating her opponents nearly as completely as Williams has done. Errani has only lost one set in the tournament, and she was the runner-up to Maria Sharapova in last year's French Open.
Rafael Nadal vs. Stanislas Wawrinka
Nadal is the King of Clay—a maestro at Roland Garros who has won seven of the last eight French Open titles.
He's also completely dominated Wawrinka throughout the course of their careers, winning all nine matches, as noted by RafaNadalFANS on Twitter:
Easy pick, right?
Not so fast.
Nadal has looked surprisingly human at Roland Garros thus far in 2013. He lost a couple of sets in the first two rounds, and he's generally looked a bit slower and sloppier than we're used to seeing from him at the French Open.
Wawrinka, on the other hand, is playing some of the best tennis in his life and has fought tooth and nail to stay in this tournament.
His five-set win over Richard Gasquet—coming from behind after being down by two sets—was easily one of the best matches of the 2013 season.
Nadal should win. He really should, but right now it's hard to bet against Wawrinka.
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