Oscar Bustos defeated Rafael Couto 6-4 6-1 in the Brazil 2 Masters 3 round of 16 on clay.
Bustos O. took it in straight sets.
Oscar Bustos beat Rafael Couto 6-4 6-1. Umpiry, "Oscar Bustos vs Rafael Couto — Brazil 2 Masters 3 Round of 16", https://umpiry.com/match/1991-04-15/bustos-vs-couto-brazil-2-masters-3-r16?utm_source=cite (as of 15 April 1991).