Tonight at 3am ET there will be a titanic battle between two Grand Slam champions down under! @angie.kerber will take on the resurgent @mariasharapova in R3 of the Australian Open. Tell us your predictions below ⬇️! 🎥: #USOpen. _ #tennis #melbourne #australia #kerber #sharapova #instatennis #grandslam #instawow #wta #wtatennis #germany #russia #champions #downunder