Madison Keys lost in the third round of the Aussie Open to Angelique Kerber. (Asanka Brendon Ratnayake/Icon SMI)
After beating Yulia Putintseva 7-5, 6-3 in the second round of the Dubai Championships, Agnieszka Radwanska was asked who she thought was the best under-20 player. Radwanska blanked at first but eventually chose American Madison Keys.
"Yes, I saw her couple of times, and I think this girl can play very good tennis," Radwanska told reporters. "I think that girl will be, you know, I think top 20, top 30 very soon."
Radwanska isn't the only top-five player impressed by Keys' poise and power. Li Na, who barely edged Keys in a January match, was equally impressed.
"She has huge, big serve," Li said after that match. "She's pretty, pretty good. I mean, if she play level like this every match, she should be soon top 20, top 15, top 10."