Andrea Petkovic defeated Jule Niemeier 7-6 4-6 7-5 in the Hamburg semi-final on clay. The upset overturned the form book — Jule Niemeier came in leading the head-to-head 1–0. Andrea Petkovic claimed a first win over Jule Niemeier in two meetings, levelling the head-to-head at 1–1.
Petkovic A. came through in three sets.
Petkovic A. and Niemeier J. faced 1 of the same opponent in the last 12 months. Petkovic A. went 0–1 (0%) against them, Niemeier J. 0–1 (0%).
Only 1 common opponent — too few for any conclusion. Shown without assessment.
Andrea Petkovic beat Jule Niemeier 7-6 4-6 7-5. Umpiry, "Andrea Petkovic vs Jule Niemeier — Hamburg Semi-final", https://umpiry.com/match/2021-07-05/niemeier-vs-petkovic-hamburg-sf?utm_source=cite (as of 5 July 2021).