KIKI BERTENS, 27
World ranking: 4
Best Slam result: French Open semi-finals (2016)
Best Wimbledon result: Quarter-finals (last year)
Bertens beat four former Grand Slam champions on her way to the Madrid Open title in May.
That victory vaulted her to No. 4 in the world, and she will go into Wimbledon aiming to become the first woman from the Netherlands to win a Grand Slam singles title.
The Dutchwoman has a cannon of a serve, which she follows up with one of the heaviest forehands on the WTA Tour. Under the guidance of her coach Raemon Sluiter, she has become a relentless attacker.
SOFIA KENIN, 20
World ranking: 28
Best Slam result: French Open 4th round (this year)
Best Wimbledon result: 2nd round (last year) Kenin has had a fine European swing, reaching the fourth round at Roland Garros after beating fellow American Serena Williams, before losing to eventual champion Ashleigh Barty of Australia in three sets.
She won the Mallorca Open last weekend by beating Belinda Bencic in a highly entertaining final and already has one of the game's best backhands.
Her ability to remain calm and thrive in pressure-filled moments is what sets her apart and her use of the drop shot and lob rattles opponents who prefer pounding groundstrokes from the baseline.
BELINDA BENCIC , 22
World ranking: 13
Best Slam result: US Open quarter-final (2014)
Best Wimbledon result: 4th round (2015, last year) Dominic Thiem's former coach Gunter Bresnik has praised the 22-year-old Swiss as an "unbelievably smart player", and she revels in confounding her opponents on a grass court.
En route to reaching the Mallorca final, she defeated defending Wimbledon champion Angelique Kerber of Germany before narrowly losing to Kenin, who saved three match points in the second set.
She was coached by Martina Hingis' mother Melanie Molitor during her formative years, and her style of play is similar to that of the former world No. 1, with superb feel and ball control.