Jo-Wilfried Tsonga looked back at some of the most memorable victories he had in his career. According to the Frenchman, his defeat of Roger Federer, who is considered as one of the greatest tennis players in history of the sport, is one of the most unforgettable wins he had.

The World No. 10 has scored 351 victories since turning professional in 2004 and he has staged some of the biggest upsets in the history of the sport, beating the world’s top tennis players. Just this year, Tsonga beat Rafael Nadal to reach his first Shanghai Rolex Masters final. In an interview with Brazil’s Globo.com, Tsonga recalled the most significant victories for him.

According to Tsonga, beating David Nalbandian of Argentina at the Masters 1000 Paris final in 2008 is also memorable for him. It was when he claimed his second career title, his first in an ATP World Tour Masters 1000 event.

“Against Nalbandian in the final of the Masters 1000 Paris,” Tsonga revealed. “And second, against Roger Federer in the 2013 Roland Garros quarterfinals (important for my confidence in clay) and in the 2011 Wimbledon quarterfinals, the latter was my biggest wins to date.”

Tsonga and Federer clashed 16 times in their careers. Their most recent meeting took place in the hard courts of the 2014 Rogers Cup, where Tsonga won 7-5 7-6(3). Still, he trails behind the Swiss tennis great in their head-to-head record 5-11. He also defeated Federer in the quarterfinals of 2009 Rogers Cup 7-6 (5) 1-6 7-6(3), in the third round of the 2011 Rogers Cup 7-6(3) 4-6 6-1, and in the semifinals of the 2012 Qatar ExxonMobil Open after the Swiss was forced to withdrawal because of back spasms.

The 30-year-old also spoke about his participation in the upcoming Rio Olympics. He said that he will play his best, adding that he hopes to win a gold medal for his country. At the 2012 London Olympics, Tsonga partnered with Michael Llodra in men’s doubles and win a silver medal losing to the Bryan brothers in the finals 6-4 7-6(7).