#NextGen star Alexander Zverev claimed his first ATP World Tour title on Sunday, knocking off US Open champion Stan Wawrinka and ending the teenage title drought on the ATP World Tour.

The 19 year old Zverev withstood a late charge from Wawrinka to win the St. Petersburg Open final 6-2, 3-6, 7-5 in two hours and 23 minutes. The Hamburg native had been 0-2 in his previous finals this season and in his career (l. to Mayer at Halle; l. to Thiem at Nice).

“This victory is something special,” Zverev said. “I played all the finals well. I lost to Dominic Thiem on clay and I could have won against Florian Mayer on the grass… Now I’m very happy with the win, especially over such a great player like Stan.”

The upset ends two winning streaks for Wawrinka: His finals streak, which ends at 11 and started in January 2014 with a victory against Edouard Roger-Vasselin in Chennai. The win also snaps Wawrinka’s overall win streak at 10, dating back to his first-round match at the US Open.

“We showed high-quality tennis,” Wawrinka said. “I was struggling in the third set. I had chances but I didn’t manage to convert them. He deserved the win.”

Zverev had lost his previous finals in three sets, and he looked out of it in the early goings of Sunday’s third set as well. Wawrinka was up a break at 3-0 and had grabbed control of the match by forcing the 6’6″ Zverev to chase balls all over the court – up, back and from side to side – by using a variety of slice and topspin.

But Zverev, the 2015 ATP Star Of Tomorrow presented by Emirates, crawled back into the final. The two were tied at 5-all and in the midst of a 21-shot baseline rally when Wawrinka blasted a forehand wide to give the German his fourth and final break. Heading into Sunday, Wawrinka had won 28 consecutive service games and erased all eight break points faced in St. Petersburg.

“In the third set, I had the initiative and played slice to his left more. I tried to neutralize his massive backhand,” Zverev said.

Serving for the match, Zverev stepped up to the line with confidence and sealed the title with a forehand winner. He’s the first teenage titlist on the ATP World Tour since 19 year old Marin Cilic won New Haven in 2008.

In beating World No. 3 Wawrinka in the final and World No. 9 Tomas Berdych in the semi-final, Zverev also becomes the first player to win his maiden ATP World Tour title by defeating back-to-back Top 10 opponents since Albert Portas won the 2001 Hamburg crown (d. No. 7 Hewitt in semi-final; d. No. 6 Ferrero in final).

Zverev will receive 250 Emirates ATP Rankings points and $163,485. He’ll also match a career high of No. 24 in the new Emirates ATP Rankings. Wawrinka will receive 150 Emirates ATP Rankings points and $86,100.

Dominic Inglot and Henri Kontinen saved a match point and captured their first ATP World Tour title together on Sunday at the St. Petersburg Open. The Brit and Fin improved to a perfect 4-0 together by prevailing against German Andre Begemann and Indian Leander Paes 4-6, 6-3, 12-10 to win the ATP World Tour 250 doubles crown.

The comeback in the final marked the third match of the tournament in which Inglot/Kontinen fought back from a set down. They cut their margins especially close against Begemann/Paes, who had not dropped a set before Sunday and were playing in their second ATP World Tour final of the season after falling at the Winston-Salem Open in August to Kontinen and Guillermo Garcia-Lopez.

Begemann/Paes held a match point at 9-8 in the match tie-break and appeared to have won the final before Inglot/Kontinen challenged an out call. The call was overturned and the point was replayed. Defending a match point for a second time, Inglot/Kontinen took no chances as Kontinen smashed a forehand overhead that landed well inside the lines. A few minutes later, he delivered a service winner to give them their first team title.

Kontinen, who won the St. Petersburg Open title last season with Treat Huey, becomes the first player to win back-to-back doubles titles in St. Petersburg since Andrei Olhovskiy, who won titles in 1996 with Yevgeny Kafelnikov and in 1997 with Brett Steven. The 26-year-old Kontinen has now won five ATP World Tour doubles titles this season and 11 for his career.

Inglot claims his second ATP World Tour title of the season after winning in Nottingham with Canadian Daniel Nestor. The 30-year-old Brit now has six for his career. He and Kontinen will receive 250 Emirates ATP Doubles Rankings points and split $49,660.

Paes/Begemann were going for their first ATP World Tour title together. Begemann falls to 4-5 in ATP World Tour doubles finals. Paes was trying to win an ATP World Tour doubles title for the 20^th consecutive year. The 43 year old, who is now 55-41 in doubles finals, has won at least one ATP World Tour doubles title since 1997. He and Begemann will receive 150 Emirates ATP Doubles Rankings points and split $26,110.