Constantin Frantzen defeated Bjoern Petersen 6-1 3-6 6-4 in the USA F39 round of 32 on hard.
Frantzen C. came through in three sets.
Constantin Frantzen beat Bjoern Petersen 6-1 3-6 6-4. Umpiry, "Constantin Frantzen vs Bjoern Petersen — USA F39 Round of 32", https://umpiry.com/match/2017-11-27/frantzen-vs-petersen-usa-f39-r32?utm_source=cite (as of 27 November 2017).