Happy 30th Birthday to #USOpen champion @angie.kerber! Angie will take on Maria Sharapova tomorrow in R3 of the Australian Open! Will you be watching? 🎥: 2016 Final 🆚 Pliskova. _ #tennis #angiekerber #instatennis #happybirthday #germany #kerber #wta #champion #yonex #grandslam #flushingmeadows #tennispro