Roger Federer will miss the French Open due to minor knee surgery. He is expected back for Wimbledon. He will turn 39 this summer and he may even opt to play in the Olympics late this summer. Not a total loss. He would likely wear himself out trudging around in the clay ( his worst surface) and needs to be fully rested for Wimbledon. The last time he had knee surgery was in 2016 and didn't play well in his brief return but after a six month break he came back and won the Aussie Open in 2017 and Wimbledon in 2017 and the Aussie again in 2018. Last year he came within a hair of winning Wimbledon. Obviously grass is his best surface and I keep thinking when he does finally retire I can't think of a better place to hang it up than Wimbledon. It would be a very emotional scene and perhaps it will take place there in 2021? I can't envision him playing too much longer. Kim Clijsters at 36 is making her second comeback. She was able to win two US Opens after having a baby (2009, 2010) but she hung it up in the fall of 2012 and has decided to come back again. Well about a thousand pizzas latter Kim is back. She is huge. But her father was a star soccer player and her mother was a gymnast so she has great athletic pedigree so even at her bulk without seeing her play I imagine she still has some athletic talent leftover. I guess she figured that the women's game is so far down she could make a move but that won't be easy.