Alexander Zverev battled past Arthur Fils despite losing the first set to book a place in the Halle Open semi-finals.

The German, chasing his first-ever grass-court title, needed two and a half hours to get his 6-7 (5-7) 6-3 6-4 victory.

Neither player managed a break in the opening set, matching each other evenly before Fils finally got the edge in the tie-break to take the lead.

Zverev soon raised his level though, and during a run of eight consecutive points, broke the Frenchman to love at 3-2 on his way to forcing a decider.

Despite another bright start to the set by Fils, he failed to get a single break, with Zverev rallying to set up a meeting with Hubert Hurkacz in the next round.

Data Debrief: Zverev edges ever-closer to grass title

Zverev is 37-10 for the season, and is the first person since Roger Federer (2012-19) to reach back-to-back semi-finals at the Halle Open.

A two-time finalist at the tournament, the German is hoping to add two more wins to his 18-7 record in Germany to finally get his hands on the trophy.