Lukas Lacko defeated Laurynas Grigelis 6-3 6-4 in the US Open qualifying round of 128 on hard. The result followed the form book — Lukas Lacko came in leading the head-to-head 1–0, defending last year's round of 128. Lukas Lacko extended the head-to-head to 2–0.
Lacko L. took it in straight sets.
Lukas Lacko beat Laurynas Grigelis 6-3 6-4. Umpiry, "Lukas Lacko vs Laurynas Grigelis — US Open Qualifying Round of 128", https://umpiry.com/match/2017-08-23/grigelis-vs-lacko-us-open-q128?utm_source=cite (as of 23 August 2017).