Andrea Petkovic defeated Julie Coin 6-4 6-2 in the Tokyo qualifying round of 16 on hard. The upset overturned the form book — Julie Coin came in leading the head-to-head 1–0. Andrea Petkovic claimed a first win over Julie Coin in two meetings, levelling the head-to-head at 1–1.
Petkovic A. took it in straight sets.
Petkovic A. and Coin J. faced 1 of the same opponent in the last 12 months. Petkovic A. went 0–1 (0%) against them, Coin J. 0–1 (0%).
Only 1 common opponent — too few for any conclusion. Shown without assessment.
Andrea Petkovic beat Julie Coin 6-4 6-2. Umpiry, "Andrea Petkovic vs Julie Coin — Tokyo Qualifying Round of 16", https://umpiry.com/match/2009-09-26/coin-vs-petkovic-tokyo-q16?utm_source=cite (as of 26 September 2009).