Will anyone explain why fed will be no.4 seed at wimbledon?

[gaebiskon]

isn't wawrinka supposed to be no.3 and Djokovic no.4 based on ranking points?

[gambleForLife]

Wimbledon has its own seeding system:

"The Committee seeds the top players and pairs on the basis of their rankings, but it can change the seedings based on a player's previous grass court performance. Since 2002 a seeding committee has not been required for the Gentlemen's Singles following an agreement with the ATP. While the seeds are still the top 32 players according to rankings, the seeding order is determined using the formula: ATP Entry System Position points + 100% points earned for all grass court tournaments in the past 12 months + 75% points earned for the best grass court tournament in the 12 months before that."

[gaebiskon]

Thanks a lot!