Halep and Thiem back to the grind, Kvitova dresses for success

Take a look at the best tennis content posted on social media on December 15th, put together for you by Tennis Majors.

Just for you, Tennis Majors has compiled the best social media posts from December 15. See how top stars like Simona Halep and Dominic Thiem are kicking off their off-season training, and while you're here, enjoy a few glam shots from the likes of Petra Kvitova, Sloane Stephens and Iga Swiatek. 

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