El ColegiadoData on refereeing in the Liga

Estrada Fernández × Diego Costa

20 matches of Diego Costa (Real Valladolid, Atlético Madrid, Rayo Vallecano) 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 20 Liga matches in which Diego Costa took part, from 2009-10 to 2020-21: 1,430 minutes played, 3 yellow cards and 0 red cards. With the other referees, over the same seasons (166 matches, 11,518 minutes), Diego Costa receives 0.40 yellow cards per 90 minutes, against 0.19 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

16 starts · 1,430 minutes · 8 seasons

Yellow cards

3for 6.1 expected

0.19 per 90 minutes with this referee · 0.40 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 cards36.13−0.1970.080.97no clear difference
Red cards00.23−0.0150.741.00no clear difference

The 20 matches

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

DateMatchTeamMinutesYellowsReds
17 Jan 2010Racing de Santander 1-1 Real ValladolidReal Valladolid0′ → 90′00
4 Apr 2010Real Valladolid 0-2 Villarreal CFReal Valladolid0′ → 90′00
1 May 2010Real Valladolid 0-0 Getafe CFReal Valladolid0′ → 90′00
3 Oct 2010Sevilla FC 3-1 Atlético MadridAtlético Madrid↑ 46′ → 90′00
11 Dec 2010Atlético Madrid 2-0 Deportivo de A CoruñaAtlético Madrid↑ 86′ → 90′00
23 Jan 2011Sporting de Gijón 1-0 Atlético MadridAtlético Madrid0′ → 90′00
24 Apr 2011Atlético Madrid 4-1 Levante UDAtlético Madrid0′ → 90′10
5 Feb 2012Real Zaragoza 1-2 Rayo VallecanoRayo Vallecano↑ 46′ → 90′10
7 Apr 2012Rayo Vallecano 6-0 CA OsasunaRayo Vallecano0′ → 81′00
16 Sept 2012Atlético Madrid 4-3 Rayo VallecanoAtlético Madrid0′ → 56′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′ → 90′00
2 Feb 2014Atlético Madrid 4-0 Real SociedadAtlético Madrid0′ → 90′00
23 Mar 2014Real Betis 0-2 Atlético MadridAtlético Madrid0′ → 90′00
28 Feb 2018Atlético Madrid 4-0 CD LeganésAtlético Madrid0′ → 73′00
8 Apr 2018Real Madrid CF 1-1 Atlético MadridAtlético Madrid0′ → 71′00
29 Oct 2019Deportivo Alavés 1-1 Atlético MadridAtlético Madrid0′ → 70′00
27 Sept 2020Atlético Madrid 6-1 Granada CFAtlético Madrid0′ → 71′00
19 Dec 2020Atlético Madrid 3-1 Elche CFAtlético Madrid↑ 74′ → 90′00

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

Diego Costa with other referees

  • Mateu Lahoz14 matches
  • González González13 matches
  • David Fernández Borbalán10 matches
  • Undiano Mallenco10 matches