Novi Sad, Serbia ( - When Switzerland visits Serbia in their Davis Cup tie this weekend, the Swiss will boast 17-time Grand Slam champion Roger Federer and newly crowned Australian Open champion Stan Wawrinka, while former world No. 1 Novak Djokovic had made himself unavailable for the best- of-five battle.

The 32-year-old Federer made a last-minute decision to play this week. He has not played in an opening-round Davis Cup tie since 2005 and skipped the event altogether last year.

Friday's opening singles rubbers on the indoor hardcourt at Spens Sport Centre will pit the world No. 8 Federer against Ilija Bozoljac and the third-ranked Wawrinka versus Dusan Lajovic.

Saturday's doubles call for a Swiss pairing of Marco Chiudinelli and Michael Lammer to take on a Serbian duo of Filip Krajinovic and Nenad Zimonjic, while Sunday's reverse singles pit former No. 1 great Federer against Lajovic and Wawrinka versus Bozoljac.

The Swiss are captained by Severin Luthi, while the host Serbs, who lost to the Czech Republic in last year's World Group finale, are led by Bogdan Obradovic.

Switzerland, led by Federer, topped Serbia 4-1 in a World Group playoff in Geneva in 2006.

This week's winner will meet the Belgium-Kazakhstan victor in the quarterfinals in April.