SHANGHAI (AP) — Four American players pulled off upsets at the Shanghai Masters on Monday. A fifth wasn't so lucky.
Perhaps the most surprising win came from the 81st-ranked McDonald, who defeated 14th-seeded Milos Raonic 6-3, 5-7, 6-3.
"Definitely my biggest win to date," said McDonald, a qualifier into the main draw. "I thought I played great tennis and I could feel all the improvements I've had over the last few months and was happy I could put it together tonight."
It was the second meeting between the two. Raonic won their fourth-round encounter at Wimbledon in four sets in July.
Klahn, also a qualifier and making his first appearance in Shanghai, defeated Nick Kyrgios 4-6, 6-4, 6-3. The talented but erratic Kyrgios has played in Shanghai four times with his best showing being two second-round finishes.
Querrey upset ninth-seeded Diego Schwartzman 6-3, 6-4, while Fritz beat Robin Haase 6-3, 7-6 (3). The pair will face each other in the next round.
Tiafoe, however, lost to Matthew Ebden 3-6, 6-4, 6-3.
Also, 10th-seeded Stefanos Tsitsipas beat Gael Monfils 7-6 (4), 4-6, 6-4 and 13th-seeded Borna Coric of Croatia defeated wild-card entry Stan Wawrinka 4-6, 6-4, 6-3.
The 20-year-old Tsitsipas is one of the fastest rising players on tour. He started the season ranked No. 91 and is currently sitting at No. 15.
"I have improved a lot since last year physically, mentally," said Tsitsipas, who was a qualifier last year but is seeded this year. "My game has changed. I am more aggressive now. I'm actually stronger."
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