Halle Hosts ATP 500 Event. The NOVENTI OPEN, one of eight grass-court events on the calendar, was re-categorised as an ATP 500 tournament in 2015. The NOVENTI OPEN has crowned six German winners since the inaugural event in 1993: Michael Stich (1994), Nicolas Kiefer (1999), David Prinosil (2000), Tommy Haas (2009 & 2012), Philipp Kohlschreiber …
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