World No. 19 Stefanos Tsitsipas and World No. 22 Ugo Humbert have both withdrawn from the ATP 500 tournament scheduled to take place next week in Hamburg.
Their spots in the main draw will be filled by Roberto Bautista Agut and Tomas Martin Etcheverry.
This follows their recent appearances in Rome, where Humbert retired from his opening match against Corentin Moutet, and Tsitsipas was defeated by Arthur Fils in the third round.
