Moya was fortunate to survive Latest photos from day five

Former champion Carlos Moya survived a superb fightback from Juan Ignacio Chela to sneak into the fourth round of the French Open.

The Spanish fourth seed appeared to have surrendered the initiative after seeing a comfortable two-set lead wiped out by the Argentine.

But after Chela claimed the third and fourth sets, Moya rediscovered his form in the decider to record a 6-2 6-3 3-6 2-6 6-3 victory in just over three hours.

But it was hardly the sort of display to suggest the 1998 champion is capable of justifying his billing as one of the favourites for the title.

Moya will face 13th-seeded Czech Jiri Novak for a place in the last eight.

Novak fought off the challenge of unpredictable Croatian Ivan Ljubicic to reach the fourth round for the first time after a 6-4 7-5 3-6 6-2 victory.

Germany's Rainer Schuettler moved into the last 16 after Wayne Ferreira was forced out of his 50th consecutive Grand Slam event with a worrying leg injury.

Schuettler led by two sets to one, but Ferreira held a break point when he stretched for a forehand and appeared to pull a muscle.

Ferreira had to be stretchered off the court

Schuettler took the first set 6-3 before Ferreira hit back to take the second 6-1.

The third went the way of Schuettler on a tiebreak, but he trailed 3-2 in the fourth when Ferreira withdrew.

The South African's participation at Wimbledon may now be in doubt with the event just over three weeks away.

Schuettler, the losing finalist at this year's Australian Open, is enjoying his best year on the tour, and will now face Martin Verkerk.

Verkerk lost the opening set but rallied to beat 29th seed Vince Spadea 5-7 6-4 6-2 7-5.

They were joined in the fourth round by Argentine Guillermo Coria, who had little trouble against Attila Savolt of Hungary.

Profile: Guillermo Coria

Seventh seed Coria, who was a recent winner in Hamburg and is expected to challenge in Paris, came through 6-4 6-1 6-1.

The first man through to the last 16 was Mariano Zabaleta, who beat 23rd seed Younes El Aynaoui for the first time in five meetings.

Zabaleta came through 6-2 6-4 3-6 7-6, but El Aynaoui was twice a break up in the fourth set only to blow his chance of taking the match to a decider.

Awesome Agassi eases through

And unseeded Brazilian Flavio Saretta set up a dream fourth-round meeting with second seed Andre Agassi.

Saretta, who beat Yevgeny Kafelnikov in the previous round, went through when his opponent Galo Blanco was forced to retire with the score at 7-6 (7-3) 6-3 2-2 to the Brazilian.