The Brit, who retired earlier this month, takes on a leadership role in the ATP. 

Last week's title winners weren't the big movers in the rankings.

The Ukrainian had some fun with serves on Instagram.

The Brit had been with Adidas for most of her career.

During a return to her native Wuhan, Li Na talked about the impact of her father's death on her career.

Andy Murray regrets the fallout and personal backlash he earned after posting a pro-Scotland message online.

Nadal, citing health concerns, will not play in the new round robin team format in Asia.