El ColegiadoData on refereeing in the Liga

César Muñiz Fernández × Sergio Ramos

24 matches of Sergio Ramos (Sevilla FC, Real Madrid CF) refereed by César Muñiz Fernández, from 2004-05 to 2013-14.

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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

César Muñiz Fernández refereed 24 Liga matches in which Sergio Ramos took part, from 2004-05 to 2013-14: 2,100 minutes played, 6 yellow cards and 0 red cards. With the other referees, over the same seasons (292 matches, 25,543 minutes), Sergio Ramos receives 0.37 yellow cards per 90 minutes, against 0.26 with César Muñiz 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

24

24 starts · 2,100 minutes · 10 seasons

Yellow cards

6for 9.0 expected

0.26 per 90 minutes with this referee · 0.37 with the others

no clear difference

Red cards

0for 1.0 expected

0.00 per 90 minutes with this referee · 0.05 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 cards69.01−0.1290.210.98no clear difference
Red cards00.97−0.0420.481.00no clear difference

The 24 matches

Minutes played and cards received by Sergio Ramos in each match refereed by César Muñiz Fernández.

DateMatchTeamMinutesYellowsReds
7 Nov 2004Sevilla FC 1-1 RCD MallorcaSevilla FC0′ → 90′00
6 Nov 2005Real Madrid CF 1-0 Real ZaragozaReal Madrid CF0′ → 90′00
22 Mar 2006Real Zaragoza 1-1 Real Madrid CFReal Madrid CF0′ → 90′00
17 Sept 2006Real Madrid CF 2-0 Real SociedadReal Madrid CF0′ → 90′00
9 Dec 2006Sevilla FC 2-1 Real Madrid CFReal Madrid CF0′ → 90′00
17 Feb 2007Real Madrid CF 0-0 Real BetisReal Madrid CF0′ → 74′10
29 Apr 2007Athletic Bilbao 1-4 Real Madrid CFReal Madrid CF0′ → 90′00
17 Jun 2007Real Madrid CF 3-1 RCD MallorcaReal Madrid CF0′ → 90′00
1 Dec 2007Real Madrid CF 3-1 Racing de SantanderReal Madrid CF0′ → 90′10
20 Jan 2008Atlético Madrid 0-2 Real Madrid CFReal Madrid CF0′ → 90′10
20 Apr 2008Racing de Santander 0-2 Real Madrid CFReal Madrid CF0′ → 90′00
31 Aug 2008Deportivo de A Coruña 2-1 Real Madrid CFReal Madrid CF0′ → 90′10
22 Nov 2008Real Madrid CF 1-0 Recreativo de HuelvaReal Madrid CF0′ → 90′00
14 Mar 2009Athletic Bilbao 2-5 Real Madrid CFReal Madrid CF0′ → 90′00
26 Sept 2009Real Madrid CF 3-0 CD TenerifeReal Madrid CF0′ → 46′00
21 Feb 2010Real Madrid CF 6-2 Villarreal CFReal Madrid CF0′ → 90′00
8 May 2010Real Madrid CF 5-1 Athletic BilbaoReal Madrid CF0′ → 90′00
30 Jan 2011CA Osasuna 1-0 Real Madrid CFReal Madrid CF0′ → 90′00
16 Apr 2011Real Madrid CF 1-1 FC BarcelonaReal Madrid CF0′ → 90′00
28 Aug 2011Real Zaragoza 0-6 Real Madrid CFReal Madrid CF0′ → 90′00
7 Jan 2012Real Madrid CF 5-1 Granada CFReal Madrid CF0′ → 90′00
31 Mar 2012CA Osasuna 1-5 Real Madrid CFReal Madrid CF0′ → 90′10
11 Nov 2012Levante UD 1-2 Real Madrid CFReal Madrid CF0′ → 90′00
25 Sept 2013Elche CF 1-2 Real Madrid CFReal Madrid CF0′ → 90′10

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

Sergio Ramos with other referees