Alexandr Dolgopolov defeated Janko Tipsarevic 6-3 7-6 in the Tokyo round of 16 on hard. The upset overturned the form book — Janko Tipsarevic came in leading the head-to-head 1–0, defending last year's quarter-final, but Alexandr Dolgopolov had been the form player, winning 3 of their last 5 on hard. Alexandr Dolgopolov claimed a first win over Janko Tipsarevic in two meetings, narrowing the head-to-head to 1–1.
Dolgopolov A. took it in straight sets.
Dolgopolov A. and Tipsarevic J. faced 9 of the same opponents in the last 12 months. Dolgopolov A. went 3–7 (30%) against them, Tipsarevic J. 4–6 (40%). Results against comparable opponents are close (1 : 2 better-results split).