Andrea Petkovic defeated Melanie Oudin 6-2 6-3 in the GER vs USA round robin on clay. The upset overturned the form book — Melanie Oudin came in leading the head-to-head 1–0. Andrea Petkovic claimed a first win over Melanie Oudin in two meetings, levelling the head-to-head at 1–1.
Petkovic A. took it in straight sets.
Petkovic A. and Oudin M. faced 9 of the same opponents in the last 12 months. Petkovic A. went 7–5 (58%) against them, Oudin M. 3–7 (30%). Petkovic A. came out better against 3 of 7 comparable opponents, Oudin M. against 0.
Clay: Petkovic A. leads 1–0 · Hard: Oudin M. leads 1–0
Andrea Petkovic beat Melanie Oudin 6-2 6-3. Umpiry, "Andrea Petkovic vs Melanie Oudin — GER vs USA Round Robin", https://umpiry.com/match/2011-04-16/oudin-vs-petkovic-ger-vs-usa-rr?utm_source=cite (as of 16 April 2011).