KEY BISCAYNE, Fla. (AP) — Lauren Davis defeated Zhang Shuai of China 6-2, 6-3 at the Sony Open on Wednesday, and former U.S. Open champion Juan Martin del Potro withdrew with a left wrist injury.
The 20-year-old Davis started 2014 ranked No. 72, and has moved up to No. 55.
Davis reached the Indian Wells fourth round, but withdrew from the match with a stomach virus.
"I'm playing really well and I have a lot of confidence," Davis said. "I think there's a time for everything and I feel like this is my time."
From 1-1 in the first set, Davis jumped ahead to a 4-1 lead. In the second set, Zhang started with a 3-1 lead, but Davis won the next five games to take the match.
Following the U.S. Open, Davis switched from working out of the Chris Evert Academy to the USTA Player Development program.
"Switching to the USTA has honestly been a great plus," Davis said. "Just hitting with other girls and making friends, and not everything there is about me.
"It's caused me to be more independent and I'm looking out for myself now."
Continue reading this story on the...