Martijn Bok defeated Luis Roberto Castillo 6-1 6-1 in the USA 6 Masters 4 round of 64 on hard.
Bok M. took it in straight sets.
Martijn Bok beat Luis Roberto Castillo 6-1 6-1. Umpiry, "Martijn Bok vs Luis Roberto Castillo — USA 6 Masters 4 Round of 64", https://umpiry.com/match/1993-10-15/bok-vs-castillo-usa-6-masters-4-r64?utm_source=cite (as of 15 October 1993).