Jan Choinski defeated Daniel Altmaier 7-5 7-6 in the Germany F1 round of 32 on carpet. The upset overturned the form book — Daniel Altmaier came in ranked #67.
Choinski J. took it in straight sets.
Jan Choinski beat Daniel Altmaier 7-5 7-6(3). Umpiry, "Jan Choinski vs Daniel Altmaier — Germany F1 Round of 32", https://umpiry.com/match/2015-01-05/altmaier-vs-choinski-germany-f1-r32?utm_source=cite (as of 5 January 2015).