John Isner powers into quarters

[truebluefan]

The nagging knee that kept John Isner out of the Australian Open last month is no longer bothering him. Instead, the 6-foot-9 American has a bad back from sitting in a cramped economy class seat on two cross-country flights.

With storms canceling his original plans, Isner was forced to travel from Jacksonville, Fla., to San Jose via Houston this week. He sat by the window for both flights, unable to get any extra leg space.

"Sure enough, there was some like 5-foot-1 person with their feet dangling on the exit row," Isner said.

The top American is still getting comfortable on the court again, too.

Isner powered his way into the quarterfinals of the SAP Open on Wednesday night, pounding 14 aces in a 7-6 (3), 2-6, 6-3 victory over Canada's Vasek Pospisil.

Read more http://espn.go.com/tennis/story/_/id/8945809/john-isner-powers-vasek-pospisil-san-jose-sap-open