Roger just announced the Match for Africa 4 which will take place at the end of this month in Seattle.

Bill Gates and John Isner will join Roger on April 29th for the Match for Africa 4 Seattle. The event will take place at 5:30 pm PT at the Key Arena in Seattle. The feature match (best of 3 sets) will be Roger against John Isner and there will also be a celebrity doubles match (one set) featuring Roger partnering with Bill Gates against Isner and his soon to be announced partner.

All of the proceeds go to the Roger Federer Foundation which supports educational projects in South Africa and Switzerland. You can find out more information here.

Tickets go on sale via Ticketmaster on Thursday, April 6 beginning at 9 am PT.