It was a French Open to remember for a quartet of rising WTA stars, but only one can earn the honors of being Breakthrough of the Month for June.
Have a look at the nominees in the video below and cast your vote before voting ends on Saturday at 11:59 p.m. EST!
Amanda Anisimova: The 17-year-old American stormed through to the semifinals of the French Open, becoming the youngest woman to reach the final four since Nicole Vaidisova in 2006.
Anisimova didn't lose a set in her first five matches, which included a stunning win over defending champion Simona Halep in the quarterfinals, and led eventual champion Ashleigh Barty by a break in the final set before falling.
She backed that up with a run to the quarterfinals of the Mallorca Open for her first tour-level singles action on grass, before falling to eventual runner-up Belinda Bencic.
Petra Martic: A first-time Grand Slam quarterfinalist in Paris, Martic scored her fourth career Top 10 win with a victory over No.2 seed Karolina Pliskova in the third round at the French Open, and battled from a set down to see off decorated veteran Kaia Kanepi in the round of 16.
She later reached the semifinals at the Nature Valley Classic in Birmingham, falling to eventual runner-up Julia Goerges, with a stunning victory over former French Open winner Jelena Ostapenko in the quarterfinals, saving five match points.
Marketa Vondrousova: Already lauded by the fans for her performance in the lead-up to Paris, Vondrousova stunned the world by reaching her first career Grand Slam final at the French Open.
She became the first teenager to make the French Open final since Ana Ivanovic in 2007 and the first teenager to reach a Grand Slam final in a decade, since Caroline Wozniacki reached the final of the 2009 US Open.
Iga Swiatek: Swiatek became the second player born in the 2000s to reach the second week of a Grand Slam, following Anisimova's efforts this year, with a run to the round of 16 at the French Open.
She beat wildcard Sandra Janicijevic, No.15 seed Wang Qiang (6-3, 6-0) and Olympic champion Monica Puig (0-6, 6-3, 6-3) before losing to Halep.
Who was your Breakthrough Player of the Month in June? Vote now!
The winners will be announced on Sunday, July 7.
How it works:
Finalists are selected by wtatennis.com
Winner is then determined by a fan vote on wtatennis.com