El ColegiadoData on refereeing in the Liga

Undiano Mallenco × Sergio Busquets

27 matches of Sergio Busquets (FC Barcelona) refereed by Alberto Undiano Mallenco, from 2008-09 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 27 Liga matches in which Sergio Busquets took part, from 2008-09 to 2018-19: 2,125 minutes played, 13 yellow cards and 1 red cards. With the other referees, over the same seasons (313 matches, 24,372 minutes), Sergio Busquets receives 0.29 yellow cards per 90 minutes, against 0.55 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

27

24 starts · 2,125 minutes · 11 seasons

Yellow cards

13for 7.5 expected

0.55 per 90 minutes with this referee · 0.29 with the others

no clear difference

Red cards

1for 0.1 expected

0.04 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 cards137.54+0.2310.020.85no clear difference
Red cards10.11+0.0380.181.00no clear difference

The 27 matches

Minutes played and cards received by Sergio Busquets in each match refereed by Undiano Mallenco.

DateMatchTeamMinutesYellowsReds
19 Oct 2008Athletic Bilbao 0-1 FC BarcelonaFC Barcelona↑ 32′ → 90′10
29 Nov 2008Sevilla FC 0-3 FC BarcelonaFC Barcelona↑ 74′ → 90′00
7 Mar 2009FC Barcelona 2-0 Athletic BilbaoFC Barcelona0′ → 90′10
2 May 2009Real Madrid CF 2-6 FC BarcelonaFC Barcelona↑ 85′ → 90′00
29 Nov 2009FC Barcelona 1-0 Real Madrid CFFC Barcelona0′ → 63′11
17 Apr 2010RCD Espanyol 0-0 FC BarcelonaFC Barcelona0′ → 90′00
8 May 2010Sevilla FC 2-3 FC BarcelonaFC Barcelona0′ → 90′10
18 Dec 2010RCD Espanyol 1-5 FC BarcelonaFC Barcelona0′ → 79′10
22 Jan 2012Málaga CF 1-4 FC BarcelonaFC Barcelona0′ → 90′00
21 Apr 2012FC Barcelona 1-2 Real Madrid CFFC Barcelona0′ → 90′10
19 Jan 2013Real Sociedad 3-2 FC BarcelonaFC Barcelona0′ → 90′10
26 Oct 2013FC Barcelona 2-1 Real Madrid CFFC Barcelona0′ → 90′10
22 Dec 2013Getafe CF 2-5 FC BarcelonaFC Barcelona0′ → 89′10
23 Mar 2014Real Madrid CF 3-4 FC BarcelonaFC Barcelona0′ → 90′10
8 Nov 2014UD Almería 1-2 FC BarcelonaFC Barcelona0′ → 66′00
11 Jan 2015FC Barcelona 3-1 Atlético MadridFC Barcelona0′ → 90′00
17 May 2015Atlético Madrid 0-1 FC BarcelonaFC Barcelona0′ → 90′00
23 Sept 2015RC Celta de Vigo 4-1 FC BarcelonaFC Barcelona0′ → 66′10
30 Jan 2016FC Barcelona 2-1 Atlético MadridFC Barcelona0′ → 90′00
6 Mar 2016SD Eibar 0-4 FC BarcelonaFC Barcelona0′ → 80′00
20 Aug 2016FC Barcelona 6-2 Real BetisFC Barcelona0′ → 90′00
22 Oct 2016Valencia CF 2-3 FC BarcelonaFC Barcelona0′ → 90′10
14 Jan 2017FC Barcelona 5-0 UD Las PalmasFC Barcelona0′ → 73′00
29 Apr 2017RCD Espanyol 0-3 FC BarcelonaFC Barcelona0′ → 90′00
18 Nov 2017CD Leganés 0-3 FC BarcelonaFC Barcelona0′ → 90′00
26 Sept 2018CD Leganés 2-1 FC BarcelonaFC Barcelona0′ → 90′00
2 Mar 2019Real Madrid CF 0-1 FC BarcelonaFC Barcelona0′ → 90′10

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