Elton John performing live with Billy Joel on the 'Face To Face' Tour at the Honda Center in Anaheim. Los Angeles, California, USA - 28.03.09

Tennis fan Elton will join expected celebrities like sporting couple Steffi Graf and Andre Agassi at the nuptials, which will reportedly take place at Roddick's Texas home.

The court hunk will wed Sports Illustrated swimsuit model Brooklyn Decker, 21, on Saturday (19Apr09), according to the New York Post.

Roddick's wedding comes a month after ex-girlfriend Mandy Moore wed singer/songwriter Ryan Adams.

Source: WENN