El ColegiadoData on refereeing in the Liga

Ramírez Domínguez × Iker Casillas

21 matches of Iker Casillas (Real Madrid CF) refereed by Rafael Ramírez Domínguez, from 2000-01 to 2010-11.

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

Ramírez Domínguez refereed 21 Liga matches in which Iker Casillas took part, from 2000-01 to 2010-11: 1,890 minutes played, 0 yellow cards and 0 red cards. With the other referees, over the same seasons (368 matches, 32,964 minutes), Iker Casillas receives 0.04 yellow cards per 90 minutes, against 0.00 with Ramírez Domínguez.

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

21

21 starts · 1,890 minutes · 11 seasons

Yellow cards

0for 0.9 expected

0.00 per 90 minutes with this referee · 0.04 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 cards00.87−0.0410.671.00no clear difference
Red cards00.15−0.0071.001.00no clear difference

The 21 matches

Minutes played and cards received by Iker Casillas in each match refereed by Ramírez Domínguez.

DateMatchTeamMinutesYellowsReds
29 Oct 2000Real Sociedad 1-4 Real Madrid CFReal Madrid CF0′ → 90′00
14 Apr 2001Real Madrid CF 4-0 Villarreal CFReal Madrid CF0′ → 90′00
23 Feb 2002Real Madrid CF 3-1 Deportivo AlavésReal Madrid CF0′ → 90′00
28 Sept 2002Real Valladolid 1-1 Real Madrid CFReal Madrid CF0′ → 90′00
22 Jun 2003Real Madrid CF 3-1 Athletic BilbaoReal Madrid CF0′ → 90′00
23 Nov 2003Real Madrid CF 2-1 Albacete BalompiéReal Madrid CF0′ → 90′00
3 Apr 2004Albacete Balompié 1-2 Real Madrid CFReal Madrid CF0′ → 90′00
21 Sept 2004Real Madrid CF 1-0 CA OsasunaReal Madrid CF0′ → 90′00
30 Jan 2005CD Numancia 1-2 Real Madrid CFReal Madrid CF0′ → 90′00
10 Apr 2005Real Madrid CF 4-2 FC BarcelonaReal Madrid CF0′ → 90′00
10 Sept 2005Real Madrid CF 2-3 RC Celta de VigoReal Madrid CF0′ → 90′00
11 Feb 2006Athletic Bilbao 0-2 Real Madrid CFReal Madrid CF0′ → 90′00
8 Apr 2007Real Madrid CF 2-0 CA OsasunaReal Madrid CF0′ → 90′00
10 Feb 2008Real Madrid CF 7-0 Real ValladolidReal Madrid CF0′ → 90′00
20 Dec 2008Real Madrid CF 1-0 Valencia CFReal Madrid CF0′ → 90′00
12 Apr 2009Real Madrid CF 2-0 Real ValladolidReal Madrid CF0′ → 90′00
21 Nov 2009Real Madrid CF 1-0 Racing de SantanderReal Madrid CF0′ → 90′00
27 Feb 2010CD Tenerife 1-5 Real Madrid CFReal Madrid CF0′ → 90′00
12 Dec 2010Real Zaragoza 1-3 Real Madrid CFReal Madrid CF0′ → 90′00
6 Feb 2011Real Madrid CF 4-1 Real SociedadReal Madrid CF0′ → 90′00
6 Mar 2011Racing de Santander 1-3 Real Madrid CFReal Madrid CF0′ → 90′00

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

Iker Casillas with other referees