Alex Rybakov defeated Nathaniel Lammons 6-4 6-3 in the USA F27 round of 32 on hard.
Rybakov A. took it in straight sets.
Alex Rybakov beat Nathaniel Lammons 6-4 6-3. Umpiry, "Alex Rybakov vs Nathaniel Lammons — USA F27 Round of 32", https://umpiry.com/match/2017-08-07/lammons-vs-rybakov-usa-f27-r32?utm_source=cite (as of 7 August 2017).