Isidro Díaz de Mera Escuderos
Madrid did better How to read the numbers
He has not refereed a Clásico. He has refereed 112 matches in La Liga from 2020/21 to 2025/26. With him, Madrid took 32 points where the odds expected 25.4; Barça took 15 where they expected 16.0.
With each club
All his La Liga games with each club, 2020/21 to 2025/26.
 Real Madrid Small sample: fewer than 15 games. |  FC Barcelona Small sample: fewer than 15 games. | |
|---|---|---|
| 12 | games with him | 7 |
| 10–2–0 | won–drew–lost | 5–0–2 |
| 32 | points won | 15 |
| 25.4 | points the odds expected | 16.0 |
| 4 usual: 2.6 | penalties won | 1 usual: 1.5 |
| 0 usual: 1.4 | penalties conceded | 0 usual: 0.7 |
"Usual" is the club's rate with other referees in the same seasons, scaled to these games.
Cards and penalties in all his league games
- yellow cards per game
- 5.28
- league average 4.72
- red cards per game
- 0.29
- league average 0.25
- penalties per game
- 0.32
- league average 0.31
More cards can reflect the games he was given, not only how he referees.
Penalty data is missing for 1 of his games.
Every game with each club
Real Madrid won 10; the odds expected about 8
- W
- W
- W
- D
- W
- W
- W
- D
- W
- W
- W
- W
FC Barcelona won 5; the odds expected about 5
- W
- W
- L
- L
- W
- W
- W
Show the games
Real Madrid
- Real Madrid 2–0 Eibar won
- Real Madrid 1–0 Athletic Club won
- Rayo Vallecano 0–1 Real Madrid won
- Real Madrid 1–1 Athletic Club drew
- Celta Vigo 0–1 Real Madrid won
- Alavés 0–1 Real Madrid won
- Real Madrid 1–0 Sevilla won
- Real Madrid 0–0 Real Betis drew
- Real Madrid 4–2 Sevilla won
- Levante 1–4 Real Madrid won
- Real Madrid 2–1 Rayo Vallecano won
- Celta Vigo 1–2 Real Madrid won
FC Barcelona
- FC Barcelona 3–0 Elche won
- FC Barcelona 3–0 Levante won
- FC Barcelona 0–1 Rayo Vallecano lost
- FC Barcelona 2–4 Girona lost
- FC Barcelona 7–0 Real Valladolid won
- FC Barcelona 4–1 Villarreal won
- Osasuna 1–2 FC Barcelona won
How to read the numbers
Expected points and expected wins come from the pre-match betting odds with the bookmaker margin removed. Like every figure here they are recorded outcomes: they do not establish decision accuracy or anything about a referee's intent. Small samples produce extreme rates, so treat anything under 15 games cautiously.
Across the 23 current referee and club outcome tests, the smallest adjusted q-value is 0.094. None is below 0.05, so no referee's record here is statistically distinguishable from chance at the usual threshold. That is not the same as proving every effect is zero.
Sources
- El Colegiado, La Liga refereeing data (matches, odds, cards, penalties; CC BY-NC 4.0 and CC BY-SA 4.0, with data from football-data.co.uk)
- El Colegiado, methodology
- RFEF CTA, current referee list
- football-data.co.uk, La Liga results and pre-match odds
- Wikipedia, Clásico match reports and cup results (CC BY-SA 4.0)
Penalties from 2022/23 come from Wikipedia match reports and may miss some.
Fan project. Figures are recorded outcomes computed from El Colegiado's open data. They describe statistical deviations and are not evidence of misconduct by any referee. Club colours are used for identification only.