El ColegiadoData on refereeing in the Liga

Estrada Fernández × Koke

25 matches of Koke (Atlético Madrid) refereed by Xavier Estrada Fernández, from 2009-10 to 2020-21.

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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 25 Liga matches in which Koke took part, from 2009-10 to 2020-21: 1,793 minutes played, 5 yellow cards and 0 red cards. With the other referees, over the same seasons (328 matches, 25,655 minutes), Koke receives 0.21 yellow cards per 90 minutes, against 0.25 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

25

20 starts · 1,793 minutes · 12 seasons

Yellow cards

5for 4.4 expected

0.25 per 90 minutes with this referee · 0.21 with the others

no clear difference

Red cards

0for 0.1 expected

0.00 per 90 minutes with this referee · 0.01 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 cards54.36+0.0320.701.00no clear difference
Red cards00.09−0.0051.001.00no clear difference

The 25 matches

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

DateMatchTeamMinutesYellowsReds
8 May 2010Sporting de Gijón 1-1 Atlético MadridAtlético Madrid↑ 65′ → 90′00
23 Jan 2011Sporting de Gijón 1-0 Atlético MadridAtlético Madrid↑ 78′ → 90′00
30 Oct 2011Atlético Madrid 3-1 Real ZaragozaAtlético Madrid↑ 87′ → 90′00
21 Mar 2012Atlético Madrid 2-1 Athletic BilbaoAtlético Madrid0′ → 72′00
13 May 2012Villarreal CF 0-1 Atlético MadridAtlético Madrid↑ 58′ → 90′00
16 Sept 2012Atlético Madrid 4-3 Rayo VallecanoAtlético Madrid0′ → 90′00
10 Feb 2013Rayo Vallecano 2-1 Atlético MadridAtlético Madrid0′ → 82′00
31 Mar 2013Atlético Madrid 1-1 Valencia CFAtlético Madrid0′ → 90′10
1 Jun 2013Real Zaragoza 1-3 Atlético MadridAtlético Madrid0′ → 90′00
24 Sept 2013Atlético Madrid 2-1 CA OsasunaAtlético Madrid0′ → 76′00
2 Feb 2014Atlético Madrid 4-0 Real SociedadAtlético Madrid0′ → 80′10
23 Mar 2014Real Betis 0-2 Atlético MadridAtlético Madrid0′ → 83′00
4 Apr 2015Córdoba CF 0-2 Atlético MadridAtlético Madrid0′ → 90′00
8 Nov 2015Atlético Madrid 1-0 Sporting de GijónAtlético Madrid0′ → 64′10
5 Mar 2017Atlético Madrid 3-0 Valencia CFAtlético Madrid0′ → 90′00
21 May 2017Atlético Madrid 3-1 Athletic BilbaoAtlético Madrid0′ → 90′00
20 Sept 2017Athletic Bilbao 1-2 Atlético MadridAtlético Madrid0′ → 90′00
28 Feb 2018Atlético Madrid 4-0 CD LeganésAtlético Madrid0′ → 90′00
8 Apr 2018Real Madrid CF 1-1 Atlético MadridAtlético Madrid0′ → 90′00
20 Oct 2018Villarreal CF 1-1 Atlético MadridAtlético Madrid0′ → 90′00
29 Oct 2019Deportivo Alavés 1-1 Atlético MadridAtlético Madrid↑ 70′ → 90′00
27 Sept 2020Atlético Madrid 6-1 Granada CFAtlético Madrid0′ → 77′00
31 Oct 2020CA Osasuna 1-3 Atlético MadridAtlético Madrid0′ → 90′10
19 Dec 2020Atlético Madrid 3-1 Elche CFAtlético Madrid0′ → 87′00
12 Jan 2021Atlético Madrid 2-0 Sevilla FCAtlético Madrid0′ → 90′10

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

Koke with other referees

  • Mateu Lahoz31 matches
  • Gil Manzano24 matches
  • González González23 matches
  • Martínez Munuera20 matches
  • Ricardo de Burgos18 matches
  • Iglesias Villanueva18 matches
  • Carlos Clos Gómez17 matches
  • Hernández Hernández17 matches
  • David Fernández Borbalán16 matches
  • Undiano Mallenco15 matches
  • Sánchez Martínez13 matches
  • Melero López12 matches
  • Munuera Montero12 matches
  • Alfonso Álvarez11 matches