Check out the 29-year-old showing off her shredded bod while rocking a bikini on an L.A. rooftop this week.
Wozniacki has been super busy this year -- when the former #1 ranked player in the world isn't playing tennis, she's been taking classes at Harvard Business School as part of a program that helps athletes build a second career outside of sports.
Caroline is enrolled in the course with her husband, ex-NBA star David Lee, figure skater Ashley Wagner, Knicks guard Reggie Bullock and more.
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There are rumblings Wozniacki -- who had a rough 2019 season -- could retire soon, partly due to her battle with rheumatoid arthritis. But, her brother, Patrick, recently announced she will be playing in at least 2 major tournaments in 2020.
"Right now, in January, she plans to compete at a WTA tournament in Auckland and then the Australian Open," Patrick told TV2 in Denmark.
"So she'll play in 2020, and that's always nice. But I don't know what else is on the program."