By Courtney Nguyen
September 18, 2013

kim-clijsters Kim Clijsters: Four time Grand Slam champion and new mother. (Al Bello/Getty Images)

Kim Clijsters and husband Brian Lynch welcomed the birth of their son Jack Leon Lynch on Wednesday. Clijsters, who retired (for a second time) after the 2012 U.S. Open, took to Twitter to announce that mom, dad, and big sister Jada are all happy and healthy.

2009 U.S. Open

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