Andrey Rublev produced a superb performance to beat Dominic Thiem in straight sets on day five of the ATP Finals.
The tournament debutant converted his third match point to cruise through the dead rubber and seal a 6-2 7-5 triumph in one hour and 14 minutes.
Victory concludes a super year for the world number eight, who bows out of the tournament in style.
Thiem was flat throughout and clearly not fired up given he had already qualified as group winner. His 300th career win will have to wait and he'll hope it comes in Saturday's semi finals.
Victory was Rublev's first at the ATP Finals in his final match of the group, following on from defeats to Stefanos Tsitsipas and Rafael Nadal.
Thiem will face the runner-up in the Tokyo 1970 group, a quartet that consists of Novak Djokovic, Daniil Medvedev, Alexander Zverev and Diego Schwartzman.