Stefanos Tsitsipas will face Daniil Medvedev in the Round of 16 at the Shanghai Masters after beating Alexandre Muller last night (AEDT).

The Greek’s 6-3, 7-5 win set up a 14th head to head matchup with Medvedev, rekindling their rivalry having last met nearly a year ago.

He took command against Muller early but lost his serve in his attempt to close out the match at 5-3 in the second set.

But he was able to regroupto break at love in the final game, finding the range on his forehand to bring up match points and then sealed the deal with the shot of the match – a wicked running forehand pass.

“I lost concentration [after] I was able to play well during the entire match,” Tsitsipas said after the match.

“I guess it brought a bit of frustration into me, because I had two nets that jumped off the net court and landed out. One on my serve, one on my forehand. It was a question of millimetres to get it over.

“A few unforced errors here and there caused the break. I did get frustrated because I didn’t feel like I deserved that particular break… Regardless of that, I continued.

“I know that I’ve been faced with moments like this before, and my biggest asset has been removing those negative thoughts, getting back into the match, and making things work again.”

In his tournament opener, Tsitsipas picked up his 200th hard-court win by beating Kei Nishikori.

The 10th seed is now through to the last 16 at an ATP Masters 1000 for the fourth time this year.

The 26-year-old will face fifth seed Medvedev today at 4pm (AEDT) for a place in the quarter-finals.

Medvedev leads their head to head record 9-4, including beating the top ranked Greek twice last year in Rome and Vienna.

“He’s someone that likes courts like this,” Tsitsipas said.

“I feel like I’m getting better with time. I feel like I’ve developed some good shots over the last few weeks. So far, I’m happy with the way my tennis is showing.

“What is missing is trying to get a good win under my belt, and that for sure will ensure and will redeem my efforts for so far of trying to get better. My whole goal is to get out there, play the best tennis that I can, and let the rest be done on its own.”