Isner’s 5-7, 7-6 (7-5), 7-6 (7-4) loss to 71st-ranked Vasek Pospisil of Canada yesterday will drop him two spots to No. 22 when the ATP World Tour rankings are published on Aug. 12, the ATP said in an e-mail. At least one American man has been in the top 20 since the rankings were first published in 1973.
Sam Querrey is the next-highest man from the U.S. at No. 26, with five others between 78 and 100. The most recent U.S. man to a major singles title was Andy Roddick at the 2003 U.S. Open. Roddick retired last year.
American women have been outperforming the men recently. There are six U.S. women ranked in the top 40 on the WTA tour, with reigning U.S. Open and French Open champion Serena Williams No. 1.
American men have been dominant in doubles, where brothers Bob and Mike Bryan can complete a calendar-year Grand Slam of the four majors at the U.S. Open, which begins Aug. 26 in New York.
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