Top-seeded Stefanos Tsitsipas clinched his first title of the year and second of his career after beating 50th-ranked Mikhail Kukushkin 7-5, 7-6 (5) in the Open 13 final on Sunday.

The 20-year-old Greek had 14 aces and won 84 percent of his first-serve points against the 31-year-old Kazakh, whose only title was nine years ago on indoor hard courts at the St. Petersburg Open in Russia.

“Winning titles is the thing that I am working for,” Tsitsipas said. “It is the biggest satisfaction and the biggest joy in tennis.”

Stefanos Tsitsipas of Greece holds his trophy after defeating Mikhail Kukushkin of Kazakhstan in the final match at the Open 13 Provence tennis tournament in Marseille, southern France, Sunday Feb. (AP Photo/Claude Paris)
Stefanos Tsitsipas of Greece holds his trophy after defeating Mikhail Kukushkin of Kazakhstan in the final match at the Open 13 Provence tennis tournament in Marseille, southern France, Sunday Feb. (AP Photo/Claude Paris)

His career is very much in the ascendancy.

Earlier this year, Tsitsipas became the youngest Grand Slam semifinalist since 2007 when he reached the last four of the Australian Open, getting the better of 20-time Grand Slam champion Roger Federer along the way.

Tsitsipas did not drop a set in winning the Open 13 title in southern France and also beat Kukushkin for the second time, having won their previous meeting on outdoor hard courts in Dubai last year.

Stefanos Tsitsipas of Greece celebrates after defeating Mikhail Kukushkin of Kazakhstan during their final match at the Open 13 Provence tennis tournament in Marseille, southern France, Sunday Feb. (AP Photo/Claude Paris)
Stefanos Tsitsipas of Greece celebrates after defeating Mikhail Kukushkin of Kazakhstan during their final match at the Open 13 Provence tennis tournament in Marseille, southern France, Sunday Feb. (AP Photo/Claude Paris)

“There was a lot of stress this week because I knew I had to face some good opponents,” said the 12th-ranked Tsitsipas. “When you care a lot, you tend to be more stressed than usual. I am happy that I got through that stress and played the game that I was supposed to play.”

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Stefanos Tsitsipas of Greece winner, left, and Mikhail Kukushkin of Kazakhstan hold their trophies after their final match at the Open 13 Provence tennis tournament in Marseille, southern France, Sunday Feb. (AP Photo/Claude Paris)
Stefanos Tsitsipas of Greece winner, left, and Mikhail Kukushkin of Kazakhstan hold their trophies after their final match at the Open 13 Provence tennis tournament in Marseille, southern France, Sunday Feb. (AP Photo/Claude Paris)
Stefanos Tsitsipas of Greece returns the ball to Mikhail Kukushkin of Kazakhstan during their final match at the Open 13 Provence tennis tournament in Marseille, southern France, Sunday Feb. (AP Photo/Claude Paris)
Stefanos Tsitsipas of Greece returns the ball to Mikhail Kukushkin of Kazakhstan during their final match at the Open 13 Provence tennis tournament in Marseille, southern France, Sunday Feb. (AP Photo/Claude Paris)
Mikhail Kukushkin of Kazakhstan returns the ball to Stefanos Tsitsipas of Greece during their final match at the Open 13 Provence tennis tournament in Marseille, southern France, Sunday Feb. (AP Photo/Claude Paris)
Mikhail Kukushkin of Kazakhstan returns the ball to Stefanos Tsitsipas of Greece during their final match at the Open 13 Provence tennis tournament in Marseille, southern France, Sunday Feb. (AP Photo/Claude Paris)