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
The World No. 1 will compete in the ATP 500 event as part of his clay-court preparations following a three-month doping suspension.
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