Rafael Nadal beat Casper Ruud in straight sets to end the ATP Finals with victory despite not reaching the semi-finals.
Nadal, who was the highest seeded player in the event with world number one Carlos Alcaraz injured, had lost his opening two Green Group games.
The 36-year-old Spaniard beat the Norwegian 7-5 7-5 in Turin, Italy.
"I have been practising well," said Nadal, who has struggled with injury since withdrawing from Wimbledon.
"Just probably not enough matches to be at the level that I needed to be. Not enough confidence, probably, after six tough months.