Tennis champion Caroline Wozniacki ended her 15-year career Friday at age 29 to raise awareness about rheumatoid arthritis.

Rheumatoid arthritis (RA) causes pain and swelling in the wrist and small joints of the hand and feet as the body’s immune system is not working properly.

The former No. 1 was diagnosed in 2018.

“l’ve played professionally since I was 15 years old. In that time I’ve experienced an amazing first chapter of my life. With 30 WTA singles titles, a world #1 ranking for 71 weeks, a WTA Finals victory, three Olympics, including carrying the flag for my native

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