Stan Wawrinka defeated Daniel Altmaier 6-3 5-7 6-4 in the GER vs SUI round robin on hard. The upset overturned the form book — Daniel Altmaier came in ranked #67.
Wawrinka S. came through in three sets.
Wawrinka S. and Altmaier D. faced 1 of the same opponent in the last 12 months. Wawrinka S. went 0–1 (0%) against them, Altmaier D. 0–1 (0%).
Only 1 common opponent — too few for any conclusion. Shown without assessment.
Stan Wawrinka beat Daniel Altmaier 6-3 5-7 6-4. Umpiry, "Stan Wawrinka vs Daniel Altmaier — GER vs SUI Round Robin", https://umpiry.com/match/2023-02-03/altmaier-vs-wawrinka-ger-vs-sui-rr?utm_source=cite (as of 3 February 2023).