Injuries, upsets for men

Injuries and upsets are wrecking the men’s side of the Western & Southern Open at Mason, Ohio. On Tuesday, Milos Raonic became the seventh player ranked in the top 10 to withdraw from the tournament, right before fellow seeded players David Goffin, Tomas Berdych and Jack Sock were knocked out in first-round matches. Juan Martin del Potro advanced to the second round with a 3-6, 7-6 (1), 6-0 upset of the 10th-seeded Berdych. Yuichi Sugita followed with a 7-5, 6-4 victory over the 13th-seeded Sock. The ninth-seeded Goffin became the first seeded man to be knocked out in Cincinnati, falling to Nick Kyrgios, 6-2, 6-3 in a first-round match. Kyrgios will meet qualifier Alexandr Dolgopolov in the second round after Dolgopolov defeated Kevin Anderson 6-4, 7-6 (6). Also, Karen Khachanov beat Diego Schwartzman 6-1, 1-6, 6-3. Eleventh-seeded Pablo Carreno Busta managed to avoid the rash of upsets, ousting Paolo Lorenzi 6-3, 6-3. On the women’s side, ninth-seeded Venus Williams cruised into the second round of this U.S. Open warmup, needing just 66 minutes to dispatch fellow American Alison Riske 6-2, 6-0. Williams will next face Ashleigh Barty, who beat Varvara Lepchenko 6-4, 6-4 in a matchup of two qualifiers. The sixth-seeded Raonic withdrew from the Masters series tournament because of a left wrist injury, tournament officials said. No. 3 Roger Federer and No. 9 Kei Nishikori withdrew Monday, the first full day of matches. No. 1 Andy Murray, No. 4 Stan Wawrinka, No. 5 Novak Djokovic and No. 6 Marin Cilic — the defending champion — withdrew before the tournament started. No. 2 Rafael Nadal, the top-seeded player, remains in the draw and will return to No. 1 when new ATP rankings are released Aug. 21.