Peter Heller defeated Matthew William Donald 6-2 6-3 in the M15 Vienna 1 quarter-final on clay.
Heller P. took it in straight sets.
Peter Heller beat Matthew William Donald 6-2 6-3. Umpiry, "Peter Heller vs Matthew William Donald — M15 Vienna 1 Quarter-final", https://umpiry.com/match/2023-09-01/donald-vs-heller-m15-vienna-1-qf?utm_source=cite (as of 1 September 2023).