▁doubles ▁title , ▁and ▁the ▁biggest ▁of ▁her ▁career ▁thus ▁far . ▁After ▁making ▁the ▁quarter final s ▁in ▁Madrid , ▁H s ie h ▁broke ▁into ▁the ▁top ▁ 2 0 ▁for ▁the ▁first ▁time . ▁She ▁concluded ▁her ▁cl ay - court ▁season ▁by ▁par tern ing ▁with ▁P eng ▁at ▁the ▁French ▁Open . ▁Se eded ▁nin th , ▁the ▁two ▁posted ▁three ▁easy ▁straight ▁set ▁wins , ▁including ▁their ▁second ▁in ▁a ▁month ▁over ▁H ant uch ová ▁and ▁Sug iy ama , ▁to ▁advance ▁to ▁the ▁quarter final s . ▁Despite ▁being ▁a ▁set ▁down , ▁the ▁pair ▁managed ▁to ▁come ▁back ▁and ▁gr ind ▁out ▁a ▁three ▁set ▁win ▁over ▁the ▁Polish ▁sister ▁du o ▁Ag n iesz ka ▁Rad wa ńska ▁and ▁Urs z ula ▁Rad wa ńska , ▁adv ancing ▁H s ie h ▁to ▁her ▁first ▁Grand ▁S lam ▁semif inal , ▁However , ▁H s ie h ▁and ▁P eng ▁were ▁be aten ▁by ▁Victoria ▁Az aren ka ▁and ▁El ena ▁V es n ina ▁in ▁straight ▁sets . ▁Non eth eless , ▁their ▁strong ▁performance ▁lifted ▁H s ie h ▁inside ▁the ▁top ▁ 1 5 . ▁ ▁H s ie h ▁and ▁P eng ▁strugg led ▁following ▁their ▁Roland ▁Gar ros ▁run , ▁losing ▁five ▁of ▁their ▁next ▁seven ▁matches , ▁including ▁an ▁opening ▁round ▁loss ▁at ▁W im ble don , ▁their ▁only ▁grass - court ▁tournament , ▁and ▁a ▁second ▁round ▁defeat ▁at ▁the ▁US ▁Open . ▁H s