Shock exit for Ferrer, Del Potro and Federer through

Updated: March 13, 2012

Juan Martin Del Potro survived a shaky second set before moving into the fourth round of the Indian Wells ATP tournament on Tuesday while fifth-seeded Spaniard David Ferrer was ousted.

Big-serving Del Potro of Argentina, who has reached the quarterfinals in every event he has played this year, advanced with a 6-2 7-6 victory over Spaniard Fernando Verdasco before Ferrer was upset 6-4 6-3 byUzbekistan’s Denis Istomin.

Ferrer, a winner of three ATP titles this year, had lost only once in 20 matches this season before struggling badly on his second serve as he was outplayed by the 51st-ranked Istomin.

Earlier on Tuesday, Brazilian Thomaz Bellucci was gifted a walkover into the fourth round when Russian Nikolay Davydenko withdrew from their match due to illness.

It was not certain whether Davydenko had succumbed to the viral infection which has already forced eight players to pull out of Indian Wells, tournament officials said.

Triple champion Roger Federer survived an early storm from Milos Raonic before taking control to complete a 6-7 6-2 6-4 victory in the third round of the Indian Wells ATP tournament on Tuesday.

Stunned by the young Canadian’s power serving in the opening set, the Swiss maestro delivered a master class in the next two, sealing victory in just over two hours when the towering Raonic netted a forehand.

Federer, who had never previously played the 21-year-old Canadian, will next face Brazilian Thomaz Bellucci