Monica Niculescu defeated Andrea Petkovic 6-4 6-1 in the Doha qualifying round 2 on hard. The upset overturned the form book — Andrea Petkovic came in leading the head-to-head 3–2, but Monica Niculescu had been the form player, winning 3 of their last 6 on hard. That levelled the head-to-head at 3–3.
Niculescu M. took it in straight sets.
Niculescu M. and Petkovic A. faced 7 of the same opponents in the last 12 months. Niculescu M. went 1–7 (13%) against them, Petkovic A. 2–6 (25%). Results against comparable opponents are close (0 : 1 better-results split).
Hard: Petkovic A. leads 2–1 · Clay: Niculescu M. leads 2–1
Monica Niculescu beat Andrea Petkovic 6-4 6-1. Umpiry, "Monica Niculescu vs Andrea Petkovic — Doha Qualifying Round 2", https://umpiry.com/match/2018-02-12/niculescu-vs-petkovic-doha-q2?utm_source=cite (as of 12 February 2018).