Alexey Vatutin defeated Steven Diez 7-6 7-6 in the Istanbul qualifying round of 16 on clay. The upset overturned the form book — Steven Diez came in leading the head-to-head 1–0, but Alexey Vatutin had been the form player, winning 3 of their last 5 on clay. Alexey Vatutin claimed a first win over Steven Diez in two meetings, levelling the head-to-head at 1–1.
Vatutin A. took it in straight sets.
Clay: Vatutin A. leads 1–0 · Hard: Diez S. leads 1–0
Alexey Vatutin beat Steven Diez 7-6(2) 7-6(7). Umpiry, "Alexey Vatutin vs Steven Diez — Istanbul Qualifying Round of 16", https://umpiry.com/match/2017-04-29/diez-vs-vatutin-istanbul-q16?utm_source=cite (as of 29 April 2017).