TENNIS in DEPTH.

Roger Federer came through a mid-match wobble to wrap up a straight-sets win over Stanislas Wawrinka and move into the French Open quarter-finals on Sunday.

Defending champion Federer made his most convincing start of the tournament so far but also went close to dropping a set for the first time before sealing a 6-3 7-6 (7/5) 6-2 victory in one hour and 56 minutes on a windy Philippe Chatrier Court.

Swede Robin Soderling dismissed Croatia’s Marin Cilic 6-4 6-4 6-2 in the fourth round of the French Open on Sunday to set up a mouthwatering rematch of last year’s final with holder Roger Federer.

The fifth-seeded Soderling, who last year handed Rafael Nadal his only defeat at Roland Garros, perfectly read the Croatian 10th seed’s service, breaking seven times.

He managed to keep his cool in the key moments of the match as Cilic, who has never made it past the fourth round here, struggled to match the Swede’s brutal strokes from the back of the court.

Soderling was in no mood to stay too long on Court Suzanne Lenglen as he ended Cilic’s ordeal after one hour and 40 minutes when the Croatian sent a forehand long.

Local hope Jo-Wilfried Tsonga retired injured from his French Open fourth-round match against Russian Mikhail Youzhny on Sunday.

Tsonga, the eighth seed, received treatment to his leg when trailing 5-2 in the opening set and called it a day when Youzhny, the 11th seed, won the following game.

Tsonga spoke to the chair umpire, flung his racket onto his chair and offered Youzhny his hand.

The former Australian Open finalist was the only Frenchman left in the draw at Roland Garros.

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