John Isner powered the United States team to the semifinals of the 2012 Davis Cup on Sunday, winning the clinching match of a 3-2 victory over France.

Isner scored a 6-3, 7-6 (4) 5-7, 6-3 win over Jo-Wilfried Tsonga on Sunday to give the Americans an unassailable 3-1 lead on the French at the Monte Carlo Country Club, and earned two of the U.S.'s three victories in the round, having previously defeated Gilles Simon in three sets.

That helped make up for Ryan Harrison's struggles against Simon and Tsonga; the youngster scored just one set off the two veterans in his two singles matches. Brothers Bob and Mike Bryan took the doubles point with a straight-sets victory over Julien Benneteau and Michael Llodra.

The U.S. will move on to the semifinals for the first time in four years to face Spain, the defending Davis Cup champions. The U.S. has not made the Davis Cup finals since 2007, when it defeated Russia to claim the nation's competition-best 32nd title.

For all news and information regarding the Davis Cup, please stay tuned to this StoryStream or visit SB Nation's dedicated tennis hub.