Taylor Fritz has put himself in a strong position to make it to the ATP Finals semis after a comeback win against Alex de Minaur. (More Teniss News)
Fritz rallied in three sets to triumph 5-7 6-4 6-3 in just over two hours, sealing De Minaur's fate, as he crashed out having failed to win a match.
The Australian made a strong start as he attempted to overturn the odds to reach the semi-finals in his maiden tournament and took control with a break late on, winning the final three games of the first set to take an early advantage.
Fritz fought back, protecting his serve in the opening game before finding his edge late on, and though De Minaur valiantly defended two set points, he could not prevent a decider.
The American eased into cruise control after that, taking a 4-1 lead with a three-game winning streak, from which he did not look back.
"Even though I won the match I feel like there wasn't necessarily any moments when I changed too much," Fritz said.
"He was all over me when I did a great job, but towards the end of the second set, I began to find my serve and I started serving much better.
"When I wasn't creating the first serves, he was just killing me from the baseline. It just gave me a little bit of comfort to just stay in the match and not be under so much pressure all the time. It was still incredibly tough."
His attention now turns to the late match in the Ilie Nastase Group between Jannik Sinner, who has already progressed to the final four, and Daniil Medvedev. The Russian must win in straight sets to progress, but if he drops a set or loses, Fritz will advance along with the world number one.
Data Debrief: On the brink
Any further involvement at the ATP Finals for Fritz may hinge on favours from elsewhere, but he worked hard on Thursday to put himself within touching distance of the semi-finals for the second time.
He struggled against the big serves of De Minaur, whose aggressive approach saw him outhit Fritz with 12 winners to seven, though he could not translate it into a win.
It means that Fritz (nine) is the first American player to register 9+ wins against top-10 opponents in a single season since Pete Sampras (10) and Andre Agassi (12) in 1999.
