It's time to pop the bubbly—Daria Kasatkina has turned 21.

The crafty Russian has enjoyed a strong 2018 so far with runs to the final in both Dubai and Indian Wells, so she deserves a hearty celebration.

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Kasatkina celebrated the milestone birthday with a tennis-themed cake in Madrid, where she's into the round of 16 after wins over Wang Qiang and Sorana Cirstea.

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The world No. 15 had a slow start in Madrid, but found her game in her second match against Cirstea.

Kasatkina will aim to bring her best against Garbine Muguruza on Wednesday.

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Kasatkina celebrates
21st birthday with
special cake

Kasatkina celebrates 21st birthday with special cake

THIS WEEK ON TENNIS CHANNEL PLUS:

ATP Madrid (5/7-5/13)

-Tennis Channel Plus features five courts of live action from the Mutua Madrid Open beginning Sunday, May 6 at 6:30am ET!