https://hamburg-open.com/wp-content/uploads/2023/04/HEO-Confirmed-Zverev-Webseite-Beitragsbild.jpg10801920Christine Ermerhttps://hamburg-open.com/wp-content/uploads/2022/09/heo2023-atp-wta-logo-300x240-1.pngChristine Ermer2023-04-25 11:00:002023-04-25 12:08:30Olympic champion Alexander Zverev set to appear in Hamburg