Vladimir Polyakov defeated Ivan Kalinin 6-3 4-6 6-3 in the Russia F8 qualifying round of 16 on clay.
Polyakov V. came through in three sets.
Vladimir Polyakov beat Ivan Kalinin 6-3 4-6 6-3. Umpiry, "Vladimir Polyakov vs Ivan Kalinin — Russia F8 Qualifying Round of 16", https://umpiry.com/match/2015-09-07/kalinin-vs-polyakov-russia-f8-q16?utm_source=cite (as of 7 September 2015).