The 36-year-old Haas produced some inspirational tennis to frustrate Wawrinka.
Federer came from a set down to beat defending champion Tommy Haas 3-6 6-3 6-4.
Youzhny reduced his racket to a mangled mess by hammering it against his bench.
Germanys Tommy Haas recorded the upset of the tournament when he stunned two-time defending champion Novak Djokovic 6-2 6-4 in the fourth round of the Sony Open at Miami
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It was the first meeting between 84th ranked Somdev and Haas,who was world number two in 2002.
Roger Federer reached his seventh straight Wimbledon final by beating Tommy Haas of Germany 7-6 (3),7-5,6-3.
Tommy Haas set the tone early with his serve,and he kept his game in tune long enough to upset No 4 Novak Djokovic…