#WaybackWednesday: 18 year old @vichka35 comes to the 2007 #USOpen unseeded and comes back from a set down to take out former champ Martina Hingis to reach the 4th round! Send a 💪 if you remember this huge backhand! _ #azarenka #hingis #tennis #grandslam #flushingmeadows #instatennis #tennispro