El ColegiadoData on refereeing in the Liga

Undiano Mallenco × Diego López

20 matches of Diego López (Villarreal CF, Real Madrid CF, RCD Espanyol) refereed by Alberto Undiano Mallenco, from 2007-08 to 2018-19.

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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

Undiano Mallenco refereed 20 Liga matches in which Diego López took part, from 2007-08 to 2018-19: 1,800 minutes played, 1 yellow cards and 0 red cards. With the other referees, over the same seasons (291 matches, 25,910 minutes), Diego López receives 0.07 yellow cards per 90 minutes, against 0.05 with Undiano Mallenco.

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 · 1,800 minutes · 10 seasons

Yellow cards

1for 1.5 expected

0.05 per 90 minutes with this referee · 0.07 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 cards11.47−0.0240.951.00no clear difference
Red cards00.12−0.0061.001.00no clear difference

The 20 matches

Minutes played and cards received by Diego López in each match refereed by Undiano Mallenco.

DateMatchTeamMinutesYellowsReds
29 Mar 2008Villarreal CF 3-0 Atlético MadridVillarreal CF0′ → 90′00
21 Sept 2008CD Numancia 1-2 Villarreal CFVillarreal CF0′ → 90′10
26 Oct 2008Villarreal CF 4-4 Atlético MadridVillarreal CF0′ → 90′00
15 Feb 2009Racing de Santander 1-1 Villarreal CFVillarreal CF0′ → 90′00
23 May 2009Villarreal CF 3-1 Valencia CFVillarreal CF0′ → 90′00
17 Jan 2010Valencia CF 4-1 Villarreal CFVillarreal CF0′ → 90′00
10 Apr 2010Villarreal CF 1-0 Sporting de GijónVillarreal CF0′ → 90′00
5 Dec 2010Villarreal CF 1-0 Sevilla FCVillarreal CF0′ → 90′00
24 Apr 2011Sevilla FC 3-2 Villarreal CFVillarreal CF0′ → 90′00
15 May 2011Villarreal CF 1-3 Real Madrid CFVillarreal CF0′ → 90′00
11 Dec 2011Villarreal CF 1-1 Real SociedadVillarreal CF0′ → 90′00
30 Mar 2013Real Zaragoza 1-1 Real Madrid CFReal Madrid CF0′ → 90′00
26 Oct 2013FC Barcelona 2-1 Real Madrid CFReal Madrid CF0′ → 90′00
23 Mar 2014Real Madrid CF 3-4 FC BarcelonaReal Madrid CF0′ → 90′00
25 Sept 2016RCD Espanyol 0-2 RC Celta de VigoRCD Espanyol0′ → 90′00
18 Feb 2017Real Madrid CF 2-0 RCD EspanyolRCD Espanyol0′ → 90′00
29 Apr 2017RCD Espanyol 0-3 FC BarcelonaRCD Espanyol0′ → 90′00
20 Jan 2018RCD Espanyol 0-3 Sevilla FCRCD Espanyol0′ → 90′00
16 Sept 2018RCD Espanyol 1-0 Levante UDRCD Espanyol0′ → 90′00
24 Apr 2019RCD Espanyol 1-1 RC Celta de VigoRCD Espanyol0′ → 90′00

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

Diego López with other referees

  • David Fernández Borbalán19 matches
  • Alfonso Álvarez17 matches
  • Del Cerro Grande15 matches
  • Carlos Clos Gómez15 matches
  • González González13 matches
  • Javier Turienzo Álvarez13 matches
  • Martínez Munuera12 matches
  • Mateu Lahoz12 matches
  • Estrada Fernández11 matches
  • Iglesias Villanueva11 matches
  • Fernando Teixeira Vitienes11 matches
  • Delgado Ferreiro10 matches