El ColegiadoData on refereeing in the Liga

David Fernández Borbalán × Xabi Prieto

22 matches of Xabi Prieto (Real Sociedad) refereed by David José Fernández Borbalán, from 2005-06 to 2017-18.

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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

David Fernández Borbalán refereed 22 Liga matches in which Xabi Prieto took part, from 2005-06 to 2017-18: 1,639 minutes played, 1 yellow cards and 0 red cards. With the other referees, over the same seasons (312 matches, 23,437 minutes), Xabi Prieto receives 0.12 yellow cards per 90 minutes, against 0.06 with David Fernández Borbalán.

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

22

18 starts · 1,639 minutes · 10 seasons

Yellow cards

1for 1.8 expected

0.06 per 90 minutes with this referee · 0.12 with the others

no clear difference

Red cards

0for 0.0 expected

0.00 per 90 minutes with this referee · 0.00 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 cards11.84−0.0460.641.00no clear difference
Red cards00.000.0001.001.00no clear difference

The 22 matches

Minutes played and cards received by Xabi Prieto in each match refereed by David Fernández Borbalán.

DateMatchTeamMinutesYellowsReds
19 Feb 2006Real Sociedad 1-2 Valencia CFReal Sociedad↑ 46′ → 90′00
8 Apr 2006Real Madrid CF 1-1 Real SociedadReal Sociedad0′ → 74′00
7 May 2006Real Sociedad 2-2 RC Celta de VigoReal Sociedad0′ → 42′00
4 Nov 2006Levante UD 2-0 Real SociedadReal Sociedad0′ → 90′00
31 Mar 2007Real Sociedad 1-0 Levante UDReal Sociedad0′ → 90′10
12 Dec 2010FC Barcelona 5-0 Real SociedadReal Sociedad0′ → 80′00
2 Mar 2011Real Sociedad 1-1 Levante UDReal Sociedad0′ → 90′00
23 Apr 2011Athletic Bilbao 2-1 Real SociedadReal Sociedad0′ → 90′00
2 Oct 2011Real Sociedad 1-2 Athletic BilbaoReal Sociedad0′ → 90′00
17 Mar 2012Getafe CF 1-0 Real SociedadReal Sociedad0′ → 90′00
22 Apr 2012Real Sociedad 1-1 Villarreal CFReal Sociedad0′ → 90′00
1 Sept 2012RCD Mallorca 1-0 Real SociedadReal Sociedad0′ → 90′00
28 Apr 2013Real Sociedad 4-2 Valencia CFReal Sociedad0′ → 87′00
1 Jun 2013Deportivo de A Coruña 0-1 Real SociedadReal Sociedad0′ → 86′00
19 Jan 2014Getafe CF 2-2 Real SociedadReal Sociedad↑ 59′ → 90′00
22 Feb 2014Real Sociedad 3-1 FC BarcelonaReal Sociedad↑ 73′ → 90′00
14 Dec 2014Real Sociedad 1-1 Athletic BilbaoReal Sociedad0′ → 90′00
31 Oct 2015Real Sociedad 2-3 RC Celta de VigoReal Sociedad0′ → 90′00
22 Jan 2016Sporting de Gijón 5-1 Real SociedadReal Sociedad0′ → 90′00
24 Apr 2016Villarreal CF 0-0 Real SociedadReal Sociedad↑ 82′ → 90′00
10 Feb 2017RCD Espanyol 1-2 Real SociedadReal Sociedad0′ → 90′00
16 Dec 2017Athletic Bilbao 0-0 Real SociedadReal Sociedad0′ → 90′00

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

Xabi Prieto with other referees

  • Undiano Mallenco19 matches
  • Mateu Lahoz18 matches
  • Del Cerro Grande17 matches
  • Iglesias Villanueva17 matches
  • Alfonso Álvarez16 matches
  • Estrada Fernández15 matches
  • Carlos Velasco Carballo15 matches
  • González González14 matches
  • Martínez Munuera12 matches
  • Fernando Teixeira Vitienes12 matches
  • Ayza Gámez11 matches
  • Carlos Clos Gómez11 matches
  • Hernández Hernández11 matches
  • Pérez Montero10 matches
  • Antonio Rubinos Pérez10 matches