Vladimir Polyakov defeated Anton Zaitsev 6-0 7-5 in the Russia F9 round of 16 on clay. The upset overturned the form book — Anton Zaitsev came in leading the head-to-head 1–0. Vladimir Polyakov claimed a first win over Anton Zaitsev in two meetings, levelling the head-to-head at 1–1.
Polyakov V. took it in straight sets.
Clay: Polyakov V. leads 1–0 · Carpet: Zaitsev A. leads 1–0
Vladimir Polyakov beat Anton Zaitsev 6-0 7-5. Umpiry, "Vladimir Polyakov vs Anton Zaitsev — Russia F9 Round of 16", https://umpiry.com/match/2013-07-29/polyakov-vs-zaitsev-russia-f9-r16?utm_source=cite (as of 29 July 2013).