Stefan Kozlov defeated Thomaz Bellucci 6-7 6-3 7-6 in the Houston qualifying round of 16 on clay. The upset overturned the form book — Thomaz Bellucci came in defending last year's final.
Kozlov S. came through in three sets.
Kozlov S. and Bellucci T. faced 1 of the same opponent in the last 12 months. Kozlov S. went 1–1 (50%) against them, Bellucci T. 0–1 (0%).
Only 1 common opponent — too few for any conclusion. Shown without assessment.
Stefan Kozlov beat Thomaz Bellucci 6-7(3) 6-3 7-6(5). Umpiry, "Stefan Kozlov vs Thomaz Bellucci — Houston Qualifying Round of 16", https://umpiry.com/match/2018-04-07/bellucci-vs-kozlov-houston-q16?utm_source=cite (as of 7 April 2018).