▁the ▁quarter final s ▁but ▁was ▁ups et ▁by ▁Jo - Wil fried ▁Ts ong a ▁in ▁straight ▁sets . ▁During ▁the ▁grass ▁court ▁season , ▁Feder er ▁won ▁his ▁only ▁title ▁of ▁the ▁season , ▁defe ating ▁Mik h ail ▁You zh ny ▁in ▁the ▁final ▁of ▁the ▁Ger ry ▁We ber ▁Open ▁in ▁three ▁sets . ▁However ▁at ▁W im ble don , ▁where ▁Feder er ▁was ▁def ending ▁champion , ▁the ▁Swiss ▁suffered ▁his ▁worst ▁Grand ▁S lam ▁defeat ▁in ▁over ▁a ▁de cade , ▁falling ▁to ▁world ▁number ▁ 1 1 6 ▁Ser gi y ▁St akh ov sky ▁in ▁the ▁second ▁round , ▁bringing ▁an ▁end ▁to ▁his ▁record ▁stre ak ▁of ▁ 3 6 ▁consecutive ▁quarter final ▁appearances ▁in ▁sl ams . ▁As ▁a ▁result ▁of ▁this ▁loss , ▁Feder er ▁fell ▁outside ▁of ▁the ▁top ▁ 4 ▁for ▁the ▁first ▁time ▁since ▁ 2 0 0 3 . ▁At ▁the ▁US ▁Open , ▁Feder er ▁reached ▁the ▁fourth ▁round ▁before ▁losing ▁to ▁Tommy ▁Rob red o ▁in ▁straight ▁sets , ▁this ▁is ▁Feder er ' s ▁first ▁loss ▁to ▁Rob red o ▁after ▁ 1 0 ▁consecutive ▁wins ▁and ▁the ▁first ▁year ▁since ▁ 2 0 0 2 ▁that ▁Feder er ▁did ▁not ▁reach ▁a ▁sl am ▁final . ▁Feder er ▁reached ▁his ▁third ▁final ▁of ▁the ▁season ▁at ▁the ▁Swiss ▁Ind o ors , ▁in ▁a ▁repeat ▁of ▁the ▁previous ▁years ▁final ▁against ▁Juan ▁Martín ▁del ▁Pot ro . ▁Despite ▁coming ▁back ▁form ▁a ▁set