Honestly, it seems as simple for Rublev that he just needs to get first serves in. He was at 42% in that 4th set. If he gets it to 52% he’s certainly still in this 4th set and if he had been at a very doable 62%, he’d probably have won the match in 4. Now he’s got to try to pick it up in the 5th. #tennis #ao23 #australianopen