Bjorn Rehnquist defeated Donavan September 6-4 6-2 in the USA F9 round of 16 on hard.
Rehnquist B. took it in straight sets.
Bjorn Rehnquist beat Donavan September 6-4 6-2. Umpiry, "Bjorn Rehnquist vs Donavan September — USA F9 Round of 16", https://umpiry.com/match/2000-04-10/rehnquist-vs-september-usa-f9-r16?utm_source=cite (as of 10 April 2000).