▁it ▁to ▁the ▁third ▁round ▁before ▁falling ▁to ▁ 2 3 rd ▁seed ▁Time a ▁B acs ins z ky ▁in ▁straight ▁sets . ▁She ▁then ▁continued ▁her ▁series ▁of ▁strong ▁performances ▁at ▁maj ors ▁by ▁reaching ▁the ▁quarter final s ▁at ▁W im ble don . ▁ ▁At ▁the ▁US ▁Open , ▁Ke ys ▁advanced ▁to ▁the ▁fourth ▁round , ▁where ▁she ▁was ▁defeated ▁by ▁Ser ena ▁Williams ▁at ▁a ▁major ▁for ▁the ▁second ▁time ▁this ▁year . ▁Ke ys ▁finished ▁the ▁season ▁with ▁a ▁high ▁enough ▁ranking ▁to ▁qual ify ▁for ▁the ▁inaug ural ▁W TA ▁El ite ▁Tro phy , ▁a ▁year - end ▁tournament ▁similar ▁to ▁the ▁top - t ier ▁W TA ▁Final s ▁for ▁the ▁top - rank ed ▁players ▁who ▁did ▁not ▁qual ify ▁for ▁those ▁higher ▁level ▁final s . ▁Ke ys ▁finished ▁in ▁second ▁place ▁in ▁her ▁three - person ▁round - ro bin ▁group , ▁ahead ▁of ▁Zh eng ▁S ais ai ▁whom ▁she ▁beat ▁and ▁behind ▁top ▁overall ▁seed ▁Ven us ▁Williams ▁whom ▁she ▁lost ▁to ▁in ▁a ▁close ▁match . ▁As ▁the ▁group ▁winner , ▁Ven us ▁was ▁the ▁only ▁player ▁to ▁advance ▁to ▁the ▁final s ▁and ▁ultimately ▁won ▁the ▁tournament . ▁After ▁the ▁season ▁was ▁over , ▁Ke ys ▁split ▁from ▁her ▁co aching ▁team ▁in ▁order ▁to ▁find ▁a ▁full - time ▁coach , ▁a ▁role ▁D aven port ▁was ▁unable ▁to ▁ful fill ▁due ▁to ▁commit ments ▁to ▁her ▁family ▁and ▁to ▁her ▁job ▁as ▁a ▁comment