Isidro Díaz de Mera Escuderos is a Spanish football referee born in Daimiel (Ciudad Real), Spain on 24 August 1989. He made his La Liga debut on 12 September 2020. He is part of the current top-flight refereeing pool in Spain and is regularly relevant for pre-match analysis, appointment previews and VAR-focused discussion.
In the 2025/26 La Liga season, Mera Escuderos has officiated 15 league matches, averaging 24.67 fouls, 0.27 penalties, 4.13 yellow cards and 0.60 red cards per game. Those numbers point to a strict and card-heavy profile, with one of the higher red-card rates in the league sample. For The VAR Verdict, that statistical snapshot helps readers understand the disciplinary threshold and general tone he has shown this season.