Luka Gregorc defeated Andrea Collarini 7-5 6-1 in the USA F1 round of 16 on clay.
Gregorc L. took it in straight sets.
Luka Gregorc beat Andrea Collarini 7-5 6-1. Umpiry, "Luka Gregorc vs Andrea Collarini — USA F1 Round of 16", https://umpiry.com/match/2011-01-10/collarini-vs-gregorc-usa-f1-r16?utm_source=cite (as of 10 January 2011).