Marcos Giron defeated Thiago Monteiro 6-4 6-7 7-6 in the Madrid Masters qualifying round 1 on clay. The result followed the form book — Marcos Giron came in ranked #88. Marcos Giron claimed a first win over Thiago Monteiro in two meetings, levelling the head-to-head at 1–1.
Giron M. came through in three sets.
Marcos Giron beat Thiago Monteiro 6-4 6-7 7-6. Umpiry, "Marcos Giron vs Thiago Monteiro — Madrid Masters Qualifying Round 1", https://umpiry.com/match/2021-05-03/giron-vs-monteiro-madrid-masters-q1?utm_source=cite (as of 3 May 2021).