Rui Machado defeated Frederik Nielsen 4-6 6-4 6-0 6-1 in the POR vs DEN round robin on clay.
Machado R. came through in four sets.
Rui Machado beat Frederik Nielsen 4-6 6-4 6-0 6-1. Umpiry, "Rui Machado vs Frederik Nielsen — POR vs DEN Round Robin", https://umpiry.com/match/2010-03-05/machado-vs-nielsen-por-vs-den-rr?utm_source=cite (as of 5 March 2010).