Mardy Fish follows through on a shot during his victory over Gilles Simon… (Darron Cummings / Associated…)
NEW YORK — Mardy Fish, the 23rd-seeded American who withdrew from his scheduled fourth-round match against top-seeded Roger Federer earlier Monday, issued a statement that didn't clarify the exact reason for his withdrawal.
"I regret that I have to withdraw from the U.S. Open for precautionary measures," the statement said. "I was reluctant to do so but am following medical advisement. I had a good summer and look forward to resuming my tournament schedule in the fall."
Fish, a 30-year-old who missed part of this season after having treatment for an irregular heartbeat, has a 1-8 career record against the 31-year-old Federer.
Fish had played listless, error-filled tennis in his third-round match, a 6-1, 5-7, 7-6 (5), 6-3 win over 16th-seeded Gilles Simon, who had been hampered by a shoulder injury that kept many of his first serves less than 100 mph.
Last spring Fish was hospitalized because his heartbeat had increased to three times its normal rate while he was resting.
He had a procedure called a cardiac catheter ablation May 23 that caused him to miss the French Open. Fish made it to the fourth round of Wimbledon but chose to skip the Olympics.
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