One is a teenager, the other a college graduate -- but did Amanda Anisimova or Danielle Collins have your WTA Breakthrough of the Month in Match? It's time to vote!
Have a look at the nominees and cast your vote before Thursday at 11:59 p.m. ET! The winner will be announced Friday, April 6.
March 2018 WTA Breakthrough of the Month Finalists
Amanda Anisimova: The reigning US Open junior champion made a senior-level splash at the BNP Paribas Open, reaching the fourth round and ticking off several professional milestones along the way.
By virtue of reaching the semifinals of the WTA 125K series event held at Indian Wells, Anisimova was awarded an wild card into the main draw of the WTA Premier Mandatory event of the season.
Anisimova recorded her first WTA-level main draw win in the first round against Pauline Parmentier, and went on to upset both World No.23 Anastasia Pavlyuchenkova and World No.9 Petra Kvitova, snapping the latter's 14-match winning streak, en route to the second week.
"Playing against these top players, I mean, they are all so good and they are world class. They have had so much experience," Anisimova told WTA Insider at Indian Wells.
"It's just so cool playing against them when I'm this young. I have no pressure going onto the court, and all I can think about is having fun, whatever happens. That's definitely an advantage."
The victories were her first over a Top 25 and a Top 10 player, and her run was halted against former World No.1 and No.5 seed Karolina Pliskova.
Anisimova's result at Indian Wells helped her earn a wildcard into the main draw of the Miami Open, where she defeated China's Wang Qiang but was forced to withdraw prior to her second round match against Garbiñe Muguruza with a right foot injury she suffered in the match.
Danielle Collins: A two-time NCAA champion at the University of Virginia, Collins shaved over 60 spots off her ranking over the course of three tournaments in March.
Collins clinched a wildcard to the BNP Paribas Open by virtue of her performance in the Oracle Challenger Series, and made it count by reaching the fourth round. The American defeated qualifier Taylor Townsend from a set down in the opening round, before stunning US Open finalist Madison Keys in the second round in straight sets for her first victory against a Top 20 player.
She continued her run by defeating fellow wildcard for former Wimbledon junior champion Sofya Zhuk, before seeing her run ended at the hands of Carla Suárez Navarro.
She followed up on her run in Indian Wells with an ever better one in Miami, where she became the first qualifier to ever reach the semifinals in Key Biscayne.
After defeating Tereza Smitkova and Jana Cepelova to qualify, she ousted Irina-Camelia Begu, CoCo Vandeweghe, Donna Vekic, Monica Puig and Venus Williams before falling to eventual runner-up Jelena Ostapenko in the final four.
"I have put in the hard work my whole life, so at the end of the day, I know I have done literally everything I can do to put myself in the best situation. And if I win the match, I win the match and it's awesome," Collins said after defeating Williams, whom she described as an idol.
"If I lose the match, I lose the match knowing that I did everything in my power to put myself in the best situation. I'm looking forward to what's in the future, and I just try to be in the moment and not think about the future too much, not think about the past too much."
Looking ahead for Collins will come with a new ranking: after starting the month well outside the Top 100, Collins ended it at a new career-best just outside the Top 50 at World No.53.
Who was your Breakthrough of the Month? Vote now!
The winner will be announced Friday, April 6.
How it works:
Finalists are selected by wtatennis.com
Winner is then determined by a fan vote on wtatennis.com