World number one Carlos Alcaraz felt "relieved" after he battled back from a set down to edge out Taylor Fritz in a thrilling contest and close on a place in the knockout stages at the ATP Finals in Turin.
With his victory, Alcaraz also moved within one win of securing the end-of-year world number one ranking in his battle with Jannik Sinner for that honour.
American sixth seed Fritz, the 2024 runner-up, matched Alcaraz for much of their two hours and 48 minutes together on court.
But the Spaniard, as he so often does, found another gear to turn the match around and complete a 6-7 (2-7) 7-5 6-3 win.