El ColegiadoData on refereeing in the Liga

David Fernández Borbalán × Sergio Busquets

22 matches of Sergio Busquets (FC Barcelona) refereed by David José Fernández Borbalán, from 2008-09 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 Sergio Busquets took part, from 2008-09 to 2017-18: 1,781 minutes played, 5 yellow cards and 0 red cards. With the other referees, over the same seasons (283 matches, 21,996 minutes), Sergio Busquets receives 0.31 yellow cards per 90 minutes, against 0.25 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

21 starts · 1,781 minutes · 10 seasons

Yellow cards

5for 5.7 expected

0.25 per 90 minutes with this referee · 0.31 with the others

no clear difference

Red cards

0for 0.1 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 cards55.71−0.0360.731.00no clear difference
Red cards00.08−0.0040.721.00no clear difference

The 22 matches

Minutes played and cards received by Sergio Busquets in each match refereed by David Fernández Borbalán.

DateMatchTeamMinutesYellowsReds
1 Feb 2009Racing de Santander 1-2 FC BarcelonaFC Barcelona0′ → 61′00
5 Dec 2009Deportivo de A Coruña 1-3 FC BarcelonaFC Barcelona0′ → 90′00
20 Feb 2010FC Barcelona 4-0 Racing de SantanderFC Barcelona0′ → 90′00
19 Sept 2010Atlético Madrid 1-2 FC BarcelonaFC Barcelona0′ → 90′00
12 Dec 2010FC Barcelona 5-0 Real SociedadFC Barcelona↑ 52′ → 90′00
29 Jan 2011Hércules CF 0-3 FC BarcelonaFC Barcelona0′ → 90′00
8 May 2011FC Barcelona 2-0 RCD EspanyolFC Barcelona0′ → 90′00
10 Dec 2011Real Madrid CF 1-3 FC BarcelonaFC Barcelona0′ → 90′00
3 Nov 2012FC Barcelona 3-1 RC Celta de VigoFC Barcelona0′ → 90′00
29 Oct 2013RC Celta de Vigo 0-3 FC BarcelonaFC Barcelona0′ → 90′00
22 Feb 2014Real Sociedad 3-1 FC BarcelonaFC Barcelona0′ → 90′10
27 Apr 2014Villarreal CF 2-3 FC BarcelonaFC Barcelona0′ → 90′10
13 Sept 2014FC Barcelona 2-0 Athletic BilbaoFC Barcelona0′ → 90′10
30 Nov 2014Valencia CF 0-1 FC BarcelonaFC Barcelona0′ → 90′00
28 Apr 2015FC Barcelona 6-0 Getafe CFFC Barcelona0′ → 46′00
20 Sept 2015FC Barcelona 4-1 Levante UDFC Barcelona0′ → 63′00
21 Nov 2015Real Madrid CF 0-4 FC BarcelonaFC Barcelona0′ → 90′10
17 Apr 2016FC Barcelona 1-2 Valencia CFFC Barcelona0′ → 90′00
21 Sept 2016FC Barcelona 1-1 Atlético MadridFC Barcelona0′ → 51′00
12 Mar 2017Deportivo de A Coruña 2-1 FC BarcelonaFC Barcelona0′ → 90′00
16 Sept 2017Getafe CF 1-2 FC BarcelonaFC Barcelona0′ → 90′00
11 Feb 2018FC Barcelona 0-0 Getafe CFFC Barcelona0′ → 82′10

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

Sergio Busquets with other referees