🌊🎾😎 #USOpenSeries Throwback: two former @wta stars warming up on the Royal Fountains of Kings Island before kicking things off at @cincytennis in 2009! 📸: @clijsterskim ➕Dementieva. _ #tennis #throwback #instatennis #cincytennis #wta #cincinnati #kimclijsters #elenadementieva