Elmer Moller advanced when Simon Anthony Ivanov retired 6-4 4-4 in the M15 Constanta 1 quarter-final. Elmer Moller claimed a first win over Simon Anthony Ivanov in two meetings, levelling the head-to-head at 1–1.
Moller E. advanced when Ivanov S. retired.
Elmer Moller beat Simon Anthony Ivanov 6-4 4-4 after Simon Anthony Ivanov retired. Umpiry, "Elmer Moller vs Simon Anthony Ivanov — M15 Constanta 1 Quarter-final", https://umpiry.com/match/2023-06-02/ivanov-vs-moller-m15-constanta-1-qf?utm_source=cite (as of 2 June 2023).