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.
Who were the biggest movers in Asia last week?
Former WTA No. 27 become's first female captain in country's history.
The 18-year-old American was diagnosed with Hodgkin's lymphoma prior to Wimbledon.