Djokovic rallies at Rome Masters, adds clay title to resume

"I'm a little surprised," said Wawrinka, who entered the week ranked 24th. "It's a big jump for me."

The 22-year-old Wawrinka was the French Open junior champion in 2003.

Djokovic broke Wawrinka's serve in the opening game of the third set when Wawrinka hit a backhand long after a 20-stroke rally.

Trailing 2-3 in the third, Wawrinka called for a trainer and had his lower back treated. He came back and didn't appear to struggle, but Djokovic maintained his lead and broke again to close out the match in a little more than 2 hours.

"He's always staying in the game," Wawrinka said. "It doesn't matter what the score is or what has happened in the game, he's always staying (focused) and trying."

After losing the first set, Djokovic started attacking the net more.