Munich - Germany
    
    Winners : Number of wins : Consecutive wins

      2  Guillermo Perez-Roldan  1988/05/02 - 1987/05/04
      2  Franco Squillari        2000/05/01 - 1999/04/26
      2  Alexander Zverev        2018/04/30 - 2017/05/01
      2  Holger Rune             2023/04/23 - 2022/05/01