Diego Schwartzman defeated Kei Nishikori 6-4 6-2 in the Rome Masters quarter-final on clay. The upset overturned the form book — Kei Nishikori came in leading the head-to-head 3–0, defending last year's quarter-final. Diego Schwartzman claimed a first win over Kei Nishikori in four meetings, narrowing the head-to-head to 3–1.
Schwartzman D. took it in straight sets.
Schwartzman D. and Nishikori K. faced 7 of the same opponents in the last 12 months. Schwartzman D. went 3–5 (38%) against them, Nishikori K. 6–4 (60%). Nishikori K. came out better against 3 of 7 comparable opponents, Schwartzman D. against 1.
Clay: Nishikori K. leads 2–1 · Hard: Nishikori K. leads 1–0
Diego Schwartzman beat Kei Nishikori 6-4 6-2. Umpiry, "Diego Schwartzman vs Kei Nishikori — Rome Masters Quarter-final", https://umpiry.com/match/2019-05-13/nishikori-vs-schwartzman-rome-masters-qf?utm_source=cite (as of 13 May 2019).