Dominic Thiem defeated Kevin Anderson 6-4 6-2 in the Madrid Masters semi-final on clay. The upset overturned the form book — Kevin Anderson came in leading the head-to-head 6–0. Dominic Thiem claimed a first win over Kevin Anderson in seven meetings, narrowing the head-to-head to 6–1.
Thiem D. took it in straight sets.
Thiem D. and Anderson K. faced 7 of the same opponents in the last 12 months. Thiem D. went 8–5 (62%) against them, Anderson K. 9–5 (64%). Results against comparable opponents are close (4 : 1 better-results split).
Clay: Thiem D. leads 1–0 · Hard: Anderson K. leads 6–0
Dominic Thiem beat Kevin Anderson 6-4 6-2. Umpiry, "Dominic Thiem vs Kevin Anderson — Madrid Masters Semi-final", https://umpiry.com/match/2018-05-07/anderson-vs-thiem-madrid-masters-sf?utm_source=cite (as of 7 May 2018).