Guus Koevermans defeated Jacob Brumm 7-6 7-6 in the USA F28 qualifying round of 16 on hard.
Koevermans G. took it in straight sets.
Guus Koevermans beat Jacob Brumm 7-6(3) 7-6(2). Umpiry, "Guus Koevermans vs Jacob Brumm — USA F28 Qualifying Round of 16", https://umpiry.com/match/2016-09-12/brumm-vs-koevermans-usa-f28-q16?utm_source=cite (as of 12 September 2016).