The rising group of American women could be set to go even higher as the tour returns to normal, according to former WTA player and USTA development coach Debbie Graham, who has tracked them since juniors.
Veteran leadership is provided by Serena and Venus Williams and teenagers like Coco Gauff and Amanda Anisimova have started breaking through. In between, though, is a large group that includes Sofia Kenin, Jennifer Brady, Jessica Pegula, Shelby Rogers, Madison Keys, Danielle Collins, and Sloane Stephens, among them.
Graham, who reached a career-high of No. 28 in the rankings in 1992—not No. 35 as WTA Tour records show—says No. 4 Kenin, 22, has improved the most as a player.
“I watched her grow up as a junior. The girl works incredibly hard," Graham told TENNIS.com. "I’m really impressed with Kenin because she was always a good player [but] she wasn't always the best player coming up.
"When I first saw her I don't know that I would have been like, 'Oh, she's going to be a top player,' but she has proved that if you really want it and you work hard and you put those hours in... You don't get that combination for so many players.
"She puts extra hours, she's been doing that with her dad, they do crazy hours. She wasn't with the USTA for a long time, they did all their stuff on their own."