Yen Hsun Lu defeated Denis Istomin 6-3 6-4 in the Cincinnati Masters round of 64 on hard. The upset overturned the form book — Denis Istomin came in leading the head-to-head 2–1, defending last year's round of 64, but Yen Hsun Lu had been the form player, winning 1 of their last 5 on hard. Yen Hsun Lu narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-06-15 | Queen's Club | Q2 | grass | Yen Hsun Lu | 7-6(6) 7-6(5) |
| 2013-07-22 | Atlanta | R16 | hard | Denis Istomin | 7-5 6-2 |
| 2012-03-08 | Indian Wells Masters | R128 | hard | Denis Istomin | 7-6(6) 6-3 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (200 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About