John Isner tops Roger Federer in 4 sets

[truebluefan]

First, Mardy Fish put together a compelling rally to get the United States off to a fast start. Then John Isner bashed his way to a big upset.

Now Roger Federer and company are on the ropes.

Isner jolted Federer with his big serve and booming groundstrokes Friday, winning 4-6, 6-3, 7-6 (4), 6-2 to give the U.S. a 2-0 lead against Switzerland in the first round of the Davis Cup.