All ▁[ Mad ison ] ▁did ▁was ▁try ▁to ▁hit ▁balls ▁into ▁the ▁next ▁yard ▁— ▁home ▁runs ." ▁ ▁Ke ys ▁started ▁playing ▁tennis ▁at ▁the ▁Qu ad - City ▁Tennis ▁Club ▁in ▁Mol ine . ▁She ▁began ▁taking ▁less ons ▁regularly ▁at ▁seven ▁and ▁began ▁compet ing ▁in ▁tournament s ▁at ▁the ▁age ▁of ▁nine . ▁When ▁she ▁was ▁ten ▁years ▁old , ▁she ▁moved ▁to ▁Florida ▁with ▁her ▁mother ▁and ▁younger ▁sister s ▁so ▁that ▁she ▁could ▁train ▁at ▁the ▁E vert ▁Tennis ▁Academy ▁founded ▁by ▁John ▁E vert ▁and ▁also ▁partly ▁run ▁by ▁his ▁sister , ▁International ▁Tennis ▁Hall ▁of ▁F amer ▁Chris ▁E vert . ▁At ▁first , ▁John ▁said ▁that ▁he ▁" th ought ▁she ▁was ▁very ▁athlet ic , ▁a ▁raw ▁talent ▁phys ically . ▁She ▁definitely ▁needed ▁to ▁be ▁clean ed ▁up ▁with ▁her ▁stro kes ." ▁Ke ys ▁noted ▁that ▁her ▁game ▁was ▁very ▁different ▁when ▁she ▁was ▁starting ▁out ▁at ▁the ▁a cademy ▁compared ▁to ▁how ▁it ▁is ▁as ▁a ▁pro , ▁saying , ▁" I ▁didn ' t ▁like ▁ground st ro kes , ▁I ▁didn ' t ▁like ▁long ▁points ▁that ▁much , ▁so ▁I ▁would ▁just ▁run ▁into ▁the ▁net ▁and ▁try ▁and ▁vol ley ." ▁Non eth eless , ▁Ke ys ' s ▁coach es ▁had ▁high ▁hopes ▁for ▁her . ▁Chris ▁said , ▁" At ▁ 1 2 ▁years ▁old , ▁she ' s ▁pretty ▁much ▁an ▁all - court ▁player ; ▁she ' s ▁not ▁one -