Jo-Wilfried Tsonga "really happy" with first win

Jo-Wilfried Tsonga has revealed that he was "really happy" to claim his first win at the ATP World Tour Finals this afternoon.

The Frenchman achieved a straight-sets victory over Mardy Fish to ensure a chance of progressing to the semi-finals of the competition.

"Today it was the opportunity to win for the first time and I'm really happy," the 26-year-old told Sky Sports News after his match with Fish.

"I played good tennis and it is good to win my first match."

Next up for Tsonga is a final group fixture against world number two Rafael Nadal.

Tsonga had a warning for the Spaniard ahead of that fixture by saying: "I promise you I will play better in the next match."

Nadal first faces Roger Federer this evening.