Jacco Van Duyn defeated Piet Norval 6-4 6-4 in the Great Britain 2 Masters 3 qualifying round on hard.
Van Duyn J. took it in straight sets.
Jacco Van Duyn beat Piet Norval 6-4 6-4. Umpiry, "Jacco Van Duyn vs Piet Norval — Great Britain 2 Masters 3 Qualifying Round", https://umpiry.com/match/1991-04-22/duyn-vs-norval-great-britain-2-masters-3-qf?utm_source=cite (as of 22 April 1991).