Christopher Heyman defeated Jan Choinski 6-4 4-6 7-6 in the Germany F2 semi-final on carpet.
Heyman C. came through in three sets.
Christopher Heyman beat Jan Choinski 6-4 4-6 7-6(5). Umpiry, "Christopher Heyman vs Jan Choinski — Germany F2 Semi-final", https://umpiry.com/match/2018-01-22/choinski-vs-heyman-germany-f2-sf?utm_source=cite (as of 22 January 2018).