- Williams holder of Open era record 23 majors
- World No. 1 had cut back on Tour events in recent years
- "I don't think anybody is bigger than the sport"
(CNN)As Serena Williams chased a historic calendar grand slam in 2015, tickets for the US Open women's finals sold out before the men's for the first time.
Rising stars and comebacks
"No one is bigger than the sport"
Fewer Tour events
•2014: 12 tournaments
•2015: 7 tournaments
•2016: 3 tournaments
•2017: 1 tournament
(Excludes majors and Olympics)