Matches in the database
220
2000-0112 active seasons2025-26
Alfonso Álvarez
Alfonso Javier Álvarez Izquierdo, catalán committee: 220 Liga matches in the database, from 2006-07 to 2017-18.
- Full name
- Alfonso Javier Álvarez Izquierdo
- Committee
- catalán committee (Cataluña)
- Primera
- 2006 → 2018
- Database
- 2006-07 → 2017-18 · 220 matches
Name variants merged
Alfonso ÁlvarezÁlvarez Izquierdo
Biography: es.wikipedia:Alfonso Álvarez Izquierdo
Matches in the database Number of Liga matches in the database, all sources combined.
Clubs refereed
35
26 pairs tested (at least 5 matches), 9 descriptive only
Activity per season
Liga matches refereed each season
Profile compared with the Liga
Per-match average vs Liga average over their seasons
Penalties per match
0.336Liga 0.290 · +16%
Reds per match
0.368Liga 0.322 · +14%
Yellows per match
5.42Liga 5.15 · +5%
Fouls per match
30.6Liga 30.0 · +2%
Alfonso ÁlvarezLiga, same seasons
Referee × club
All clubs refereed by Alfonso Álvarez, by number of matches. Verdicts tested on the whole database (pairs with at least 5 matches).
Verdict / q-value With hundreds of comparisons, some look extreme by chance. The Benjamini-Hochberg correction accounts for this: a deviation is only called notable if q < 0.05. Otherwise: inconclusive. Inconclusive does not mean "no effect": with 11 matches, only a deviation of about ±1.57 points per match could have been detected.
Verdicts on 5 measures: points, penalties, reds, yellows, fouls. "Descriptive" = fewer than 5 matches, no test.
Wins
11
Draws
8
Defeats
10
Wins Draws Defeats
Points distribution from the odds
Loading matches…
Tests on the whole database The 5 tests Five measures tested for each referee × club pair with at least 5 matches: points − expected (simulation from the odds), penalty, red-card, yellow-card and foul balances (permutation within the club's seasons). q = p corrected with Benjamini-Hochberg.
Deviation per match; q = p corrected across all tested pairs.
| Measure | Deviation | p | q | Verdict |
|---|---|---|---|---|
| Points − expected | −0.217 | 0.38 | 1.00 | inconclusive |
| Penalty balance | +0.034 | 0.85 | 1.00 | inconclusive |
| Red-card balance | −0.102 | 0.42 | 1.00 | inconclusive |
| Yellow-card balance | +0.265 | 0.47 | 1.00 | inconclusive |
| Foul balance | −0.096 | 0.95 | 1.00 | inconclusive |
Inconclusive does not mean "no effect": with 29 matches, only a deviation of about ±0.97 points per match could have been detected.
Appointments Appointments Expected number = the referee's share of matches each season (among the matches they can take: never a club from their own region) × the club's matches. inconclusive
Sevilla FC matches assigned to Alfonso Álvarez, compared with the expected share.
Observed
29
Expected
27.9
Ratio
1.04
q
1.00
Record −6.3 pts vs odds · 29 matches Pair page →
Important matches
Share of each club's important matches assigned to Alfonso Álvarez, compared with other referees (2000-01 → 2025-26)
| Club | Matches | Of which important | Share (this referee) | Share (other referees) | p | q | Reading |
|---|---|---|---|---|---|---|---|
 Sevilla FC | 29 | 3 | 10% | 20% | 0.34 | 1.00 | inconclusive |
 Getafe CF | 28 | 2 | 7% | 22% | 0.06 | 1.00 | inconclusive |
 Athletic Bilbao | 26 | 3 | 12% | 21% | 0.33 | 1.00 | inconclusive |
 Villarreal CF | 23 | 2 | 9% | 21% | 0.20 | 1.00 | inconclusive |
 Málaga CF | 22 | 1 | 5% | 21% | 0.06 | 1.00 | inconclusive |
 Deportivo de A Coruña | 22 | 5 | 23% | 19% | 0.78 | 1.00 | inconclusive |
 Levante UD | 21 | 3 | 14% | 22% | 0.59 | 1.00 | inconclusive |
 Real Sociedad | 21 | 3 | 14% | 21% | 0.59 | 1.00 | inconclusive |
 Atlético Madrid | 20 | 0 | 0% | 18% | 0.03 | 1.00 | inconclusive |
 Real Betis | 20 | 4 | 20% | 21% | 1.00 | 1.00 | inconclusive |
 CA Osasuna | 19 | 3 | 16% | 21% | 0.78 | 1.00 | inconclusive |
 Valencia CF | 18 | 3 | 17% | 19% | 1.00 | 1.00 | inconclusive |
 Racing de Santander | 17 | 3 | 18% | 21% | 1.00 | 1.00 | inconclusive |
 RCD Mallorca | 14 | 1 | 7% | 21% | 0.32 | 1.00 | inconclusive |
 Real Madrid CF | 14 | 1 | 7% | 16% | 0.71 | 1.00 | inconclusive |
 Real Zaragoza | 13 | 1 | 8% | 22% | 0.32 | 1.00 | inconclusive |
 Rayo Vallecano | 12 | 2 | 17% | 21% | 1.00 | 1.00 | inconclusive |
 RC Celta de Vigo | 11 | 3 | 27% | 21% | 0.71 | 1.00 | inconclusive |
 UD Almería | 11 | 2 | 18% | 21% | 1.00 | 1.00 | inconclusive |
 Granada CF | 11 | 2 | 18% | 21% | 1.00 | 1.00 | inconclusive |
 Sporting de Gijón | 10 | 0 | 0% | 22% | 0.13 | 1.00 | inconclusive |
 SD Eibar | 9 | 4 | 44% | 20% | 0.10 | 1.00 | inconclusive |
 Real Valladolid | 8 | 3 | 38% | 21% | 0.38 | 1.00 | inconclusive |
 Recreativo de Huelva | 7 | 1 | 14% | 21% | 1.00 | 1.00 | inconclusive |
 Elche CF | 5 | 0 | 0% | 22% | 0.59 | 1.00 | inconclusive |
 CD Leganés | 5 | 1 | 20% | 21% | 1.00 | 1.00 | inconclusive |
Important match: opponent in the season's final top 4 (recomputed standings), plus the Clásico for Barça and Real Madrid. Fisher's exact test, Benjamini-Hochberg correction across all 1,297 combinations. Sorted by number of matches.
Frequently asked questions
Which committee does Alfonso Álvarez belong to?
Alfonso Álvarez belongs to the referees' committee of Catalonia. Referees belong to a regional committee, not to a club.
How many Liga matches has Alfonso Álvarez refereed?
220 Liga matches in the database, from 2006-07 to 2017-18.
Which clubs has Alfonso Álvarez refereed most often?
Sevilla FC (29), Getafe CF (28), Athletic Bilbao (26) (ranked by number of matches only).
Since when has Alfonso Álvarez refereed in Primera?
Alfonso Álvarez refereed in Primera from 2006 to 2018.
Matches refereed
220 matches. Click a column header to sort.
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220 matches · data file: /data/arbitres/alvarez-izquierdo.json