Roger Federer is sliding in the ATP rankings, now down to No. 7.

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Federer, who spent more weeks at No. 1 than anyone, already had reached his lowest spot in a decade by dropping to No. 5 after Wimbledon — and he fell two more places Monday.

Barring a withdrawal, Federer will be seeded seventh at the U.S. Open, where he won five of his 17 Grand Slam titles.

In other changes, French Open champion Rafael Nadal — who won hard-court titles at Montreal and Cincinnati the last two weeks — rose to No. 2 from No. 3, swapping with Wimbledon champion Andy Murray. Novak Djokovic remained No. 1.

Leading American John Isner, runner-up to Nadal at Cincinnati, returned to the top 20, jumping to 14th from 22nd.

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