Ivan Ljubicic defeated Mark Knowles 4-6 6-3 6-4 in the Hamburg qualifying round of 32 on clay.
Ljubicic I. came through in three sets.
Ivan Ljubicic beat Mark Knowles 4-6 6-3 6-4. Umpiry, "Ivan Ljubicic vs Mark Knowles — Hamburg Qualifying Round of 32", https://umpiry.com/match/2000-05-15/knowles-vs-ljubicic-hamburg-q32?utm_source=cite (as of 15 May 2000).