Donnie Isaak defeated Mark Quinney 6-1 6-3 in the USA 6 Masters 2 qualifying round on hard.
Isaak D. took it in straight sets.
Donnie Isaak beat Mark Quinney 6-1 6-3. Umpiry, "Donnie Isaak vs Mark Quinney — USA 6 Masters 2 Qualifying Round", https://umpiry.com/match/1993-10-15/isaak-vs-quinney-usa-6-masters-2-qf?utm_source=cite (as of 15 October 1993).