There were no big surprises when the All England Club announced the seedings for the grass-court Grand Slam, which begins Monday.
Federer is aiming for his sixth consecutive Wimbledon title and 13th Grand Slam championship. Ivanovic looks to add to her French Open title.
Wimbledon stuck closely to the world rankings, particularly among the women, in determining the seeding for the two-week tournament. The top seven spots in the men's list followed the rankings.
Federer is followed by No. 2 Rafael Nadal, runner-up at Wimbledon the past two years, and No. 3 Novak Djokovic, the Australian Open champion. Next is No. 4 Nikolay Davydenko, No. 5 David Ferrer, No. 6 and two-time finalist Andy Roddick and No. 7 David Nalbandian.
Richard Gasquet and James Blake swap spots, with the Frenchman at No. 8 ahead of the American at No. 9. The biggest change involves Marcos Baghdatis, who is seeded at No. 10 -- 15 spots above his world ranking. The Cypriot player reached the semifinals in 2006.
Among the women, Wimbledon kept to the rankings all the way through the first 20 seeded players.
The list is headed by Ivanovic, who won the French Open for her first Grand Slam title and took over as No. 1.
She is followed by Jelena Jankovic at No. 2, former champion Maria Sharapova at No. 3, Svetlana Kuznetsova at No. 4, Elena Dementieva at No. 5, two-time winner Serena Williams at No. 6 and defending champion and four-time winner Venus Williams at No. 7.
DJOKOVIC: FEDERER WORRIED
LONDON --- Novak Djokovic thinks Roger Federer is vulnerable after a lopsided French Open loss and that he is one of several players who could end the Swiss star's five-year reign at Wimbledon.
No. 3-ranked Djokovic beat Federer in the Australian Open semifinals en route to winning his first major title in January.
"Some things are changing. I think he's a little bit shaken with that loss and mentally he has been struggling in the last couple of months," Djokovic said Wednesday. "It's normal to have ups and downs after four years of absolute dominance on the men's tour.
"New names are coming, fresh talented players who believe more they can win against him and I am one of them," Djokovic said. "Suddenly he is worried a little bit."
-- Associated Press