Agassi, the US second seed and 1999 titlist, whipped unseeded Brazilian Flavio Saretta 6-2, 6-1, 7-5, advancing on his sixth match point.

Spanish fourth seed Moya, winner in 1998, banged down 13 aces in scoring a 7-5, 6-3, 6-2 win over Czech 13th seed Jiri Novak and now faces new 'kid' on the block Verkerk, an unseeded 24-year-old Dutchman who had never won a Grand Slam encounter until this event.

Verkerk blasted past Australian Open finalist and 11th seed Rainer Schuttler of Germany 6-3, 6-3, 7-5.

Kuerten, who lifted the trophy in 1997, 2000 and 2001, made it into the last 16 after finishing off his third-round match with Argentine 21st seed Gaston Gaudio, whom he dispatched 7-6, 7-5, 5-7, 6-3, the contest having been halted at 3-3 in the third set overnight for bad weather and fading light.

Kuerten now faces Spain's Tommy Robredo, conqueror of world number one Lleyton Hewitt, after winning on his third match point when Gaudio returned a big serve long.

In the women's competitions, Serena Williams and Amelie Mauresmo set up a quarter-final showdown at the French Open when they both came through their fourth round matches on Sunday.

But while Mauresmo, whose popularity is at an all time high in France, was all business in dispatching Spain's Magui Serna 6-1, 6-2, Serena was strangely tentative in struggling past gutsy Ai Sugiyama of Japan 7-5, 6-3.

Also into the quarterfinals was Belgian fourth seed Justin Henin-Hardenne who suffered in the hot, humid conditions before getting the better of dangerous Patty Schnyder of Switzerland and American eighth seed Chanda Rubin.

Henin-Hardenne next plays Rubin who was taken all the way by unseeded Petra Mandula of Hungary before winning 4-6, 6-2, 7-5.