@madisonkeys hailed her #USOpenSeries @botwclassic SF win over Wimbledon champ Garbine Muguruza as her best tennis of 2017. She takes on @cocovandey in an all-🇺🇸final on Sunday. Give Keys a round of 👏for some incredible tennis tonight! #madisonkeys #stanford #botwclassic #tennis #paloalto #protennis #instatennis #instasports