Ludwig Sundin defeated Pieter Calitz 6-1 6-4 in the USA 4 Masters 4 round of 32 on hard.
Sundin L. took it in straight sets.
Ludwig Sundin beat Pieter Calitz 6-1 6-4. Umpiry, "Ludwig Sundin vs Pieter Calitz — USA 4 Masters 4 Round of 32", https://umpiry.com/match/1997-07-18/calitz-vs-sundin-usa-4-masters-4-r32?utm_source=cite (as of 18 July 1997).