Before hosting Australia in this weekend's Davis Cup semifinals, Team GB gets its kicks on soccer pitch.

The Czech star rises to No. 5 in the world but will need time to recuperate.

"Of course I will not be a player anymore in the future, but I would love to be involved in tennis," US Open champion says.

"I am at the peak of my abilities and I want to keep going exactly the same way," world No. 1 says of quest for more Grand Slam titles.

Relive title triumphs of every 2015 US Open champion in this one-minute recap.

"There were times my rivals brought out the best in me; there were times they brought out the worst," said the Hall of Famer.

Watch US Open champion pelt a serve at Late Show host Stephen Colbert, armed with Captain America's shield.