Fabian Marozsan

Rune's All England Club campaign was ruthlessly ended by Novak Djokovic in the fourth round, beaten in straight sets by the eventual finalist.

The Dane gave himself little time to lick his wounds and has quickly returned to the court and returned to form with his debut in Hamburg.

Looking for his first ATP Tour title of the year, the second seed followed up a straight-sets win over Fabian Marozsan by defeating Marco Trungelliti 6-4 6-3.

"It's been very intense since Wimbledon," Rune said. "I only had one day off, actually.

"I was like, 'I don’t want to rest, I want to go straight back to practice', because I was very disappointed.

"I went straight back to work on the things that needed to be done, and now I have the chance to train those things in matches."

Next up will be Arthur Fils, who booked his last-eight place by beating 2023 Hamburg finalist Laslo Djere 7-6 (7-3) 6-2.

Top seed Alexander Zverev remains a threat in the top half of the draw, however, and he will face Zhang Zhizhen in the quarters.

After having to go all the way in the opening round, Sinner was once again forced into a decider but eventually came out on top 6-4 6-7 (4-7) 6-3.

It looked like it might be an easier match for Sinner after he took the first set, but Marozsan rallied in the second. The world number one was able to force a tie-break, but he could not get the better of the Hungarian's aggressive play.

Sinner did get a decisive break in the decider though, lunging to the net to get a vital point as he rushed into a 4-0 lead before holding out to reach the next round.

Data Debrief: Sinner stays in the hunt

Sinner is still chasing his first grass-court title, and looks like he will be pushed all the way to get one in Germany.

He has improved his record for the season to 35-3 after beating Marozsan in their first ATP meeting.