Hunter Johnson defeated Constantin Frantzen 6-4 6-4 in the USA F39 qualifying round of 64 on hard.
Johnson H. took it in straight sets.
Hunter Johnson beat Constantin Frantzen 6-4 6-4. Umpiry, "Hunter Johnson vs Constantin Frantzen — USA F39 Qualifying Round of 64", https://umpiry.com/match/2016-11-28/frantzen-vs-johnson-usa-f39-q64?utm_source=cite (as of 28 November 2016).