Alexander Zverev braved wintery-like chill in Munich on Wednesday, popping a 220 kph serve on his way to a 6-2, 6-4 defeat of Ricardas Berankis.
The German top seed is on the hunt for a third home title on the Bavarian clay after lifting the trophy here in 2017 and 2018.
Temperatures hovered around the 5 Celsius mark but rain which often plagues the event was not a problem on the day to the relief of organisers.
ATP No. 6 Zverev sent down six aces while breaking his Lithuanian opponent five times in 87 minutes.
Second seed Casper Ruud will line up in the second round against John Millman after the Australian advanced as Guido Pella retired hurt to donate a 4-6, 2-0 victory.
The 24th-ranked Ruud, playing here for the third time, defeated Pablo Cuevas 6-3, 6-2.
“I haven’t played much tennis the past few weeks, so I know I’ll need to improve for the next match,” Zverev said.
The player who has finally beaten an elbow injury, added: “I’ve had success in the past and I feel good here. I’ve played well in practice and hopefully I can do better on the match court.”
Main photo:- Sascha Zverev during straight sets win in Munich by ATPTour.com