‘Future of tennis’ Zverev stuns Wawrinka to win maiden ATP title

US Open champion Stan Wawrinka came up short against rising German star Alexander Zverev in the Saint Petersburg Open final on Sunday.

US Open champion Stan Wawrinka came up short against rising German star Alexander Zverev in the Saint Petersburg Open final on Sunday, the teenager claiming his maiden ATP title 6-2, 3-6, 7-5.

Alexander Zverev poses with his winner’s trophy after the match.(AP)

Zverev, the 19-year-old Monte Carlo resident, came into the final full of confidence and broke the Swiss top seed’s serve twice for a one-set lead in 39 minutes.

In the second set, world number three Wawrinka, who has won 11 of his previous ATP finals, also broke twice to level at one-set all after one hour, 22 minutes on court.

Wawrinka’s streak of winning his last 11 ATP finals was broken. (AFP)

Wawrinka, 31, broke early in the deciding set but the 27-ranked Zverev broke back twice to close out his win in two hours, 23 minutes.

“I’m full of emotions! I just couldn’t have chosen a better place to win my maiden title,” said Zverev, who has Russian origins, at the hardcourt of Sibur Arena.

“It was really hard when I was trailing 3-0 in the deciding set but I forced myself to keep on fighting. And now I’m really happy with my win.”

Wawrinka congratulated Zverev calling him the future of tennis.

“You’re the future of the tennis but you’re already at the top,” the Swiss said.

“Today you’ve played a great match and won deservedly. My congratulations for what you’re doing so far.”