Federico Pierini defeated Catao De Sousa 6-3 6-1 in the Brazil 2 Masters 2 round of 16 on clay.
Pierini F. took it in straight sets.
Federico Pierini beat Catao De Sousa 6-3 6-1. Umpiry, "Federico Pierini vs Catao De Sousa — Brazil 2 Masters 2 Round of 16", https://umpiry.com/match/1991-04-15/pierini-vs-sousa-brazil-2-masters-2-r16?utm_source=cite (as of 15 April 1991).