John Isner defeated Pablo Cuevas 6-7 7-6 7-6 in the Madrid Masters round of 16 on clay. The upset overturned the form book — Pablo Cuevas came in defending last year's semi-final.
Isner J. came through in three sets.
Isner J. and Cuevas P. faced 9 of the same opponents in the last 12 months. Isner J. went 9–5 (64%) against them, Cuevas P. 5–6 (45%). Results against comparable opponents are close (4 : 3 better-results split).
John Isner beat Pablo Cuevas 6-7 7-6 7-6. Umpiry, "John Isner vs Pablo Cuevas — Madrid Masters Round of 16", https://umpiry.com/match/2018-05-07/cuevas-vs-isner-madrid-masters-r16?utm_source=cite (as of 7 May 2018).