The Halle Open is a men's tennis tournament held in Halle, North Rhine-Westphalia, Germany. Held since 1993, the event is played on four outdoor grass courts and is a part of the ATP Tour 500 series on the ATP Tour schedule. From Wikipedia
Defeating Hanfmann 7-5, 6-3 gave the world No. 1 fresh grass-court momentum ahead of his second-round match with Alexander Bublik.
