Roger Federer said that he was 'happy but exhausted' after his ATP World Tour Finals victory against Jo-Wilfried Tsonga.
The 30-year-old, who was appearing in his 100th career final, took three sets to retain his title at the O2 in London.
"I couldn't be more happy, I couldn't be more exhausted," said Federer.
"Jo sapped every last bit of energy out of me. There couldn't be a better way for me to finish the season.
"I really enjoyed every minute of being here, see you next year."
The win also claimed Federer his 70th career title.
Written by
Jack Prescott
Jack Prescott
