Paris: Giving a tough shot in French Open, Roger Federer cruised into the tournament’s last 16 on Saturday but the heavyweight clash between Novak Djokovic and Juan Martin del Potro will conclude on Sunday.

Federer, the 2009 champion and playing in his 46th consecutive Grand Slam tournament, disposed of Serbian 29th seed Janko Tipsarevic 6-1, 6-4, 6-3.

The third seed and 2009 champion will face close friend, and Swiss compatriot, Stanislas Wawrinka for a place in the quarter-finals.

Wawrinka, the 14th seed, recovered from two sets to love down, and was just two points from defeat in a third set tiebreak, before beating 17th-seeded Frenchman Jo-Wilfried
Tsonga 4-6, 6-7 (3/7), 7-6 (7/5), 6-2, 6-3.

That four-hour epic forced the clash between second seed Djokovic and former US Open champion Del Potro onto Suzanne Lenglen court, but the eagerly-awaited tie will finish
tomorrow because of its late evening start.

Djokovic claimed the first set 6-3 before the big Argentine snatched the second 6-3 after 96 minutes of fierce big-hitting.

However, organisers were under fire for switching the match from the main Philippe Chatrier court, a decision greeted by howls of derision from ticket-holders who then tried to get onto Suzanne Lenglen.

Djokovic, on a 41-match winning streak, complained about the noise outside as fans screamed to be allowed into the arena.

Federer said he was delighted to have his day's work wrapped up in 90 minutes.