Lleyton Hewitt edged closer to reaching the French Open semi-finals for the first time with a 7-5 6-2 7-6 win over Xavier Malisse in the fourth round.
Hewitt will face unseeded Argentine Gaston Gaudio in the quarter-finals.
The Australian eased through the first two sets but Malisse should have at least taken the match to a fourth set.
The Belgian served for the third set at 5-3 and had five set points in all but Hewitt's trademark fighting qualities got him through 8-6 in the tiebreak.
Hewitt, the former US Open and Wimbledon champion, is hoping his experience will count against Gaudio, who is in a Grand Slam quarter-final for the first time.
"I know that I have been there and done it before and when you have been through that it always helps you in tough matches," said the number 12 seed.
"I try not to think about winning the title until I make the final. Even then you try to treat it just as another match.
"It's very hard but it's been the case in the US Open and Wimbledon, when I have got through it.
"(But) I am still a long way away from winning the title. I think even when I was number one in the world, I wasn't one of the favourites for the title here."
Gaudio reached the quarter-finals with a 6-4 7-5 6-3 win over surprise package Igor Andreev.
Russian qualifier Andreev, who knocked out defending champion Juan Carlos Ferrero en route to the fourth round, battled gamely but was outclassed by his more experienced opponent.
There will be four Argentines in the last eight after eighth seed David Nalbandian beat Marat Safin.