The Australian Open Women's semifinals will pit @carowozniacki against @mertenselise, followed by @simonahalep 🆚 @angie.kerber! Let's take a look back from these 4 ladies last summer at the 2017 #USOpen and tell us your predictions for their 🇦🇺🎾SF matches ⬇️ below! _ #tennis #grandslam #kerber #halep #mertens #wozniacki #wta #melbourne #protennis #instatennis #instawow #tennispro