Nicolas Massu defeated Mark Knowles 6-4 6-4 3-6 6-1 in the BAH vs CHI round robin on hard.
Massu N. came through in four sets.
Nicolas Massu beat Mark Knowles 6-4 6-4 3-6 6-1. Umpiry, "Nicolas Massu vs Mark Knowles — BAH vs CHI Round Robin", https://umpiry.com/match/2001-04-06/knowles-vs-massu-bah-vs-chi-rr?utm_source=cite (as of 6 April 2001).