Maya Kato defeated Chiaki Okadaue 6-4 6-4 in the Pattaya 10K round of 32 on hard. The upset overturned the form book — Chiaki Okadaue came in leading the head-to-head 1–0. Maya Kato claimed a first win over Chiaki Okadaue in two meetings, levelling the head-to-head at 1–1.
Kato M. took it in straight sets.
Hard: Kato M. leads 1–0 · Carpet: Okadaue C. leads 1–0
Maya Kato beat Chiaki Okadaue 6-4 6-4. Umpiry, "Maya Kato vs Chiaki Okadaue — Pattaya 10K Round of 32", https://umpiry.com/match/2011-06-20/kato-vs-okadaue-pattaya-10k-r32?utm_source=cite (as of 20 June 2011).