Federer is 6-2 on the season, with an Australian Open semifinal loss to Novak Djokovic and an opening round loss on March 3 in Dubai to Andy Murray. The last time Federer lost three consecutive matches was the summer of 2002 when he lost four straight.

Fourth-seeded Russian Nikolay Davydenko squeezed past towering American John Isner, 6-2, 7-6 (7-3).

Sixth-seeded American Andy Roddick lost, 6-4, 6-4 to Germany's Tommy Haas. It was the seventh victory in 10 all-time meetings for Haas over Roddick.

Seventh-seed Argentine David Nalbandian defeated Latvia's Ernests Gulbis, 6-4, 4-6, 7-6 (7-4); and Murray, the 11th seed, rallied to top Austria's Jurgen Melzer, 3-6, 6-3, 6-3.

There was another upset as No. 12 seed Fernando Gonzalez of Chile went down to Croatian wild card Mario Ancic, 7-5, 3-6, 6-3.

The sweet-swinging 20-year-old Ivanovic survived a second-set charge from Romania's Ioana Raluca Olaru, to post a 6-1, 5-7, 6-0 victory.

The third-seeded Jankovic, of Serbia, drilled American wild card Ahsha Rolle 6-0, 6-2 amid windy conditions on Day 4 of this 12-day event at the beautiful Indian Wells Tennis Garden.

Davenport, the southern California native seeded 24th here, was leading Gisela Dulko 6-2 when her Argentine counterpart retired due to a right quad strain. Davenport titled here in 1997 and 2000 and was the runner-up in 1998, 2003, 2004 and 2005.

Sixth-seeded Frenchwoman Marion Bartoli reached the third round by besting Russian Elena Vesnina 6-0, 6-4. Bartoli was last year's Wimbledon runner-up to Venus Williams.