Two-time Italian Open champion Alexander Zverev made a winning start to his 2026 campaign against fellow German Daniel Altmaier.

The second seed, who triumphed in Rome in 2017 and 2024, won 7-5 6-3 in one hour and 44 minutes, with Altmaier providing him with a stern test.

After a rain delay of more than 90 minutes pushed back the match's start time, Zverev went a break up in the sixth game of the opener, though Altmaier did what so many players fail to do and caused the world number three difficulties on his serve.

Altmaier secured a commanding break in game nine and looked to be on course for a tie-break, only for Zverev to break again at the last opportunity.

Zverev could be heard frantically asking his team if further rain was forecast after taking the opening set, as a drawn-out encounter appeared to be on the cards.

And the second set did last 50 minutes, with Altmaier striking the first blow with a break in game three. Zverev hit back immediately, and the frustration got the better of his opponent as he was warned for comically gripping the head of his racket and striking the ball directly into the air using the handle.

After saving three break points in game seven, Zverev broke again in game eight, and he needed three match points to get it done on serve, finishing with a wonderful downward backhand after an exchange at the net.

Earlier on Friday, Casper Ruud defeated Zachary Svajda 6-1 6-3 and Alex De Minaur suffered another disappointing exit against a home favourite. Having gone down to Rafael Jodar at the Madrid Open, he lost 4-6 7-6 (7-5) 6-4 to Matteo Arnaldi.

Jodar also continued his momentum from his quarter-final run in Spain, beating Nuno Borges 7-6 (7-4) 6-4 to increase his tour-level record on clay to 13-2. 

German derby 

Two-time champion @AlexZverev is safely through to the third round in Rome#IBI26 | @atptour pic.twitter.com/UNfKoJLS53

— Internazionali BNL d'Italia (@InteBNLdItalia) May 8, 2026

Data Debrief: Zverev makes it a big five on clay

Since the format's introduction in 1990, Zverev is only the fifth player to claim 75 ATP Masters 1000 match wins on clay, after Rafael Nadal, Novak Djokovic, Roger Federer and David Ferrer.

And, with 28 career wins at the Italian Open, he has only registered more victories in Madrid (30) among Masters 1000 events. 

Jodar, meanwhile, became just the fourth teenager this decade to reach the Italian Open's third round, after Lorenzo Musetti (18) and Jannik Sinner (19) in 2020, as well as Jakub Mensik (19) in 2025.