El ColegiadoData on refereeing in the Liga

Estrada Fernández × Íñigo Martínez

20 matches of Íñigo Martínez (Real Sociedad, Athletic Bilbao) refereed by Xavier Estrada Fernández, from 2011-12 to 2019-20.

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Player data: 2000-01 → 2021-22 only. Player-level match sheets come from Zenodo (BeSoccer, CC BY-NC 4.0 licence, non-commercial use). No free source provides them after 2021-22: more recent matches are not counted here. Penalties conceded are not attributed to players in the source, so they are not analysed.

In short

Estrada Fernández refereed 20 Liga matches in which Íñigo Martínez took part, from 2011-12 to 2019-20: 1,793 minutes played, 4 yellow cards and 0 red cards. With the other referees, over the same seasons (263 matches, 23,282 minutes), Íñigo Martínez receives 0.28 yellow cards per 90 minutes, against 0.20 with Estrada Fernández.

Verdict: no clear difference with the other referees.

Cards are rare (less than one per player per match): over a few dozen matches, only a very large deviation can be told apart from chance. "No clear difference" does not mean "no effect".

Matches

20

20 starts · 1,793 minutes · 9 seasons

Yellow cards

4for 5.4 expected

0.20 per 90 minutes with this referee · 0.28 with the others

no clear difference

Red cards

0for 0.2 expected

0.00 per 90 minutes with this referee · 0.02 with the others

no clear difference
For experts: statistical tests and method

Permutation test stratified by season: within each season, the player's matches given to this referee are drawn again at random among all the player's matches (same number per season). Deviation = (observed − expected cards) per 90 minutes played with this referee; positive = more cards than expected. q: Benjamini-Hochberg correction over the 3,781 pairs with at least 10 matches, separately for yellows and reds.

MeasureObservedExpectedDeviation / 90 minpqVerdict
Yellow cards45.43−0.0720.481.00no clear difference
Red cards00.16−0.0081.001.00no clear difference

The 20 matches

Minutes played and cards received by Íñigo Martínez in each match refereed by Estrada Fernández.

DateMatchTeamMinutesYellowsReds
23 Oct 2011Real Sociedad 0-0 Getafe CFReal Sociedad0′ → 90′00
8 Dec 2012Real Sociedad 1-1 Getafe CFReal Sociedad0′ → 90′00
13 May 2013Real Sociedad 2-2 Granada CFReal Sociedad0′ → 90′00
5 Oct 2013Rayo Vallecano 1-0 Real SociedadReal Sociedad0′ → 90′00
2 Feb 2014Atlético Madrid 4-0 Real SociedadReal Sociedad0′ → 90′10
16 Mar 2014Real Sociedad 1-0 Valencia CFReal Sociedad0′ → 90′00
12 Apr 2014RC Celta de Vigo 2-2 Real SociedadReal Sociedad0′ → 90′10
21 Sept 2014Real Sociedad 1-2 UD AlmeríaReal Sociedad0′ → 90′00
1 Mar 2015Valencia CF 2-0 Real SociedadReal Sociedad0′ → 90′00
17 May 2015Real Sociedad 0-3 Granada CFReal Sociedad0′ → 83′00
22 Sept 2015Granada CF 0-3 Real SociedadReal Sociedad0′ → 90′00
10 Dec 2016Real Sociedad 3-2 Valencia CFReal Sociedad0′ → 90′00
7 Jan 2018CD Leganés 1-0 Real SociedadReal Sociedad0′ → 90′00
9 Feb 2018Athletic Bilbao 0-0 UD Las PalmasAthletic Bilbao0′ → 90′00
12 May 2018Deportivo Alavés 3-1 Athletic BilbaoAthletic Bilbao0′ → 90′10
23 Sept 2018Real Betis 2-2 Athletic BilbaoAthletic Bilbao0′ → 90′10
27 Jan 2019Athletic Bilbao 1-0 Real BetisAthletic Bilbao0′ → 90′00
12 May 2019Athletic Bilbao 3-1 RC Celta de VigoAthletic Bilbao0′ → 90′00
30 Aug 2019Athletic Bilbao 2-0 Real SociedadAthletic Bilbao0′ → 90′00
1 Jul 2020Valencia CF 0-2 Athletic BilbaoAthletic Bilbao0′ → 90′00

↑: came on as a substitute. Stoppage time is not recorded in the source: minutes stop at 90.

Íñigo Martínez with other referees

  • Del Cerro Grande24 matches
  • Sánchez Martínez20 matches
  • Martínez Munuera19 matches
  • Mateu Lahoz19 matches
  • Iglesias Villanueva16 matches
  • González González15 matches
  • Hernández Hernández15 matches
  • Melero López14 matches
  • Undiano Mallenco14 matches
  • Alfonso Álvarez12 matches
  • David Fernández Borbalán12 matches
  • Gil Manzano11 matches
  • Jaime Latre11 matches
  • Munuera Montero10 matches
  • Carlos Velasco Carballo10 matches