The Swiss will meet Germany's Philipp Kohlschreiber in first-round action at Dubai.
The Argentine says he needs to rest his right knee and plans to return to action at Indian Wells.
Belinda Bencic doesn't measure success solely in winning and losing.
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.
