Hugo Gaston advanced when Cedrik Marcel Stebe retired 7-6 4-3 in the Lisboa CH quarter-final.
Gaston H. advanced when Stebe C. retired.
Hugo Gaston beat Cedrik Marcel Stebe 7-6 4-3 after Cedrik Marcel Stebe retired. Umpiry, "Hugo Gaston vs Cedrik Marcel Stebe — Lisboa CH Quarter-final", https://umpiry.com/match/2021-09-27/gaston-vs-stebe-lisboa-ch-qf?utm_source=cite (as of 27 September 2021).