The Russian announced the split on social media in a heartfelt message.
Serena goes glam for Academy Awards on Sunday.
The Spaniard got a horrible break during his match with Cameron Norrie on Wednesday in Rio
Petra Kvitova is confident Naomi Osaka will adjust to life at the top.
"Martina Navratilova’s recent comments on trans athletes are transphobic," Athlete Ally says in statement.
Coach Fredrik Rosengren wants to spend more time with family.
Former No. 1 has simple reaction to slow start.