Serena Williams recently announced her retirement to the shock of many fans. And even though fans are sad to see her go, many are left wondering who the superstar athlete will pass the baton to. Following a successful career, Serena Williams announced her retirement on the cover of Vogue earlier this week. Her plans to leave after she completes the U.S. Open later this month shocked fans. And according to Williams, the decision certainly wasn’t easy for her, either. “There is no happiness in this topic for me.” she says, “It’s the hardest thing that I could ever imagine. I hate it. I hate that I have to be at this crossroads. I keep saying to myself, I wish it could be easy for me, but it’s not. I’m torn: I don’t want it to be over, but at the same time I’m ready for what’s next.” And by “what’s next,” Williams means growing her family of three. She talks about how her daughter, Olympia , prays to be a big sister one day. And since she and her husband are open to adding another...