Sabr

US Open: Against Federer, Wawrinka must play his best ever match on hard-courts

The tasty all-Swiss battle between Federer and Wawrinka pits two players who are yet to lose to a set in this US Open - two superstars serving superbly well

Stan Wawrinka brings out Roger Federer's 'SABR' in QF win at US Open

Stan Wawrinka admitted Wednesday that he has no reservations about imitating his rivals' tricks of the trade, including Roger Federer's latest weapon