Thumbs up for @angie.kerber, who remains undefeated in 2018 with a solid 6-1, 6-2 win over Keys to move into the Australian Open semis. Tell us if you think the 2016 #USOpen champion is ready to win her third Grand Slam crown! #angeliquekerber #kerber #melbourne #wta #grandslam #tennis #protennis #instatennis #instasports