Jannik Sinner made it three wins from as many matches at the ATP Finals with a routine victory over Daniil Medvedev in his final group-stage outing.

Sinner topped the Ilie Nastase Group and reached the last four with a perfect 3-0 record for the second season in a row, beating Medvedev 6-3 6-4 in 75 minutes.

After a late break saw Sinner take the first set, Medvedev threatened a fightback by reeling off three straight games in the second, only to immediately concede another break.

Speaking after the win, his eighth in 15 all-time meetings with Medvedev, Sinner credited his opponent for posing a tactical challenge.

"I'm trying to find new ways to improve as a player," Sinner said. "I'm trying to win as many matches here as I can. Me and Daniil, we know each other very well.

"So, every time we step on court, we try to change something tactically. I felt like I was ready to see what he was going to do today.

"I know what I have achieved during this year, so I try to step on court with a good mindset. I have beautiful people around me who support me daily, which for me is really important."

Data Debrief: Sinner targeting exclusive club

Sinner's victory ensured smooth passage to the next round, as he bids to replicate the achievements of Roger Federer and Novak Djokovic, the only previous players to win the Australian Open, US Open and ATP Finals in the same season.

The win – Sinner's ninth in a row – saw him draw level with Alexander Zverev for the most victories on the ATP Tour this year, with 68. They are the first duo to both record at least 50 in a single year since Djokovic (82) and Andy Murray (51) in 2015.