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🧑⚖️ Referee Profile
L Mason
506 matches officiated across 97 teams
* Note: Detailed card statistics for matches before 2005 may be incomplete.
506
Matches
3.2
🟨 / Game
97
Teams
Our comprehensive analysis of L Mason's officiating record examines 97 teams across 506 matches, revealing fascinating patterns in how this referee impacts different teams' performances. The data shows a 100.0 percentage point spread between the most favorable and most-impacted teams under L Mason, with some notable negative patterns worth examining. L Mason averages 3.2 yellow cards and 0.13 red cards per match. Newport County appears most affected with a -45.0% bias score over 1 matches. This analysis helps football fans, bettors, and fantasy managers understand historical referee-team dynamics and make more informed decisions.
All Teams Ranked by Bias
#
Team
Games
Win Rate
Bias Score
🟨/G
Verdict
1
#1Brighton
9
0.0%
-45.0%
1.6
🚨 Strong Bias
Games
9
Win Rate
0.0%
Bias Score
-45.0%
2
#2Chesterfield
8
0.0%
-45.0%
1.4
🚨 Strong Bias
Games
8
Win Rate
0.0%
Bias Score
-45.0%
3
#3Derby
10
10.0%
-35.0%
2.1
🚨 Strong Bias
Games
10
Win Rate
10.0%
Bias Score
-35.0%
4
#4Bristol City
7
14.3%
-30.7%
2.1
🚨 Strong Bias
Games
7
Win Rate
14.3%
Bias Score
-30.7%
5
#5Norwich
13
15.4%
-29.6%
1.8
🚨 Strong Bias
Games
13
Win Rate
15.4%
Bias Score
-29.6%
6
#6Mansfield
6
16.7%
-28.3%
1.5
🚨 Strong Bias
Games
6
Win Rate
16.7%
Bias Score
-28.3%
7
#7Blackpool
12
16.7%
-28.3%
2.0
🚨 Strong Bias
Games
12
Win Rate
16.7%
Bias Score
-28.3%
8
#8Southampton
22
18.2%
-26.8%
1.9
🚨 Strong Bias
Games
22
Win Rate
18.2%
Bias Score
-26.8%
9
#9Bournemouth
16
18.8%
-26.3%
1.1
🚨 Strong Bias
Games
16
Win Rate
18.8%
Bias Score
-26.3%
10
#10Rotherham
5
20.0%
-25.0%
0.8
🚨 Strong Bias
Games
5
Win Rate
20.0%
Bias Score
-25.0%
11
#11Wycombe
5
20.0%
-25.0%
2.0
🚨 Strong Bias
Games
5
Win Rate
20.0%
Bias Score
-25.0%
12
#12Nott'm Forest
10
20.0%
-25.0%
1.9
🚨 Strong Bias
Games
10
Win Rate
20.0%
Bias Score
-25.0%
13
#13Blackburn
5
20.0%
-25.0%
2.4
🚨 Strong Bias
Games
5
Win Rate
20.0%
Bias Score
-25.0%
14
#14Portsmouth
5
20.0%
-25.0%
2.6
🚨 Strong Bias
Games
5
Win Rate
20.0%
Bias Score
-25.0%
15
#15Bristol Rvs
5
20.0%
-25.0%
1.0
🚨 Strong Bias
Games
5
Win Rate
20.0%
Bias Score
-25.0%
16
#16West Ham
24
20.8%
-24.2%
1.7
🚨 Strong Bias
Games
24
Win Rate
20.8%
Bias Score
-24.2%
17
#17Swansea
24
20.8%
-24.2%
1.3
🚨 Strong Bias
Games
24
Win Rate
20.8%
Bias Score
-24.2%
18
#18Middlesbrough
17
23.5%
-21.5%
1.9
🚨 Strong Bias
Games
17
Win Rate
23.5%
Bias Score
-21.5%
19
#19Wolves
24
25.0%
-20.0%
1.3
🚨 Strong Bias
Games
24
Win Rate
25.0%
Bias Score
-20.0%
20
#20Hull
20
25.0%
-20.0%
1.6
🚨 Strong Bias
Games
20
Win Rate
25.0%
Bias Score
-20.0%
21
#21Cardiff
15
26.7%
-18.3%
1.7
⚠️ Potential Bias
Games
15
Win Rate
26.7%
Bias Score
-18.3%
22
#22QPR
15
26.7%
-18.3%
1.7
⚠️ Potential Bias
Games
15
Win Rate
26.7%
Bias Score
-18.3%
23
#23Lincoln
7
28.6%
-16.4%
2.1
⚠️ Potential Bias
Games
7
Win Rate
28.6%
Bias Score
-16.4%
24
#24Tranmere
7
28.6%
-16.4%
1.4
⚠️ Potential Bias
Games
7
Win Rate
28.6%
Bias Score
-16.4%
25
#25Sheffield United
17
29.4%
-15.6%
1.9
⚠️ Potential Bias
Games
17
Win Rate
29.4%
Bias Score
-15.6%
26
#26Doncaster
10
30.0%
-15.0%
1.4
⚠️ Potential Bias
Games
10
Win Rate
30.0%
Bias Score
-15.0%
27
#27Huddersfield
13
30.8%
-14.2%
1.4
⚠️ Potential Bias
Games
13
Win Rate
30.8%
Bias Score
-14.2%
28
#28Stoke
39
30.8%
-14.2%
1.9
⚠️ Potential Bias
Games
39
Win Rate
30.8%
Bias Score
-14.2%
29
#29Newcastle
29
31.0%
-14.0%
1.6
⚠️ Potential Bias
Games
29
Win Rate
31.0%
Bias Score
-14.0%
30
#30Burnley
19
31.6%
-13.4%
1.4
⚠️ Potential Bias
Games
19
Win Rate
31.6%
Bias Score
-13.4%
31
#31West Brom
28
32.1%
-12.9%
1.3
⚠️ Potential Bias
Games
28
Win Rate
32.1%
Bias Score
-12.9%
32
#32Aston Villa
30
33.3%
-11.7%
2.0
⚠️ Potential Bias
Games
30
Win Rate
33.3%
Bias Score
-11.7%
33
#33Leicester
21
33.3%
-11.7%
1.8
⚠️ Potential Bias
Games
21
Win Rate
33.3%
Bias Score
-11.7%
34
#34Millwall
6
33.3%
-11.7%
2.0
⚠️ Potential Bias
Games
6
Win Rate
33.3%
Bias Score
-11.7%
35
#35Stockport
6
33.3%
-11.7%
1.8
⚠️ Potential Bias
Games
6
Win Rate
33.3%
Bias Score
-11.7%
36
#36Fulham
26
34.6%
-10.4%
1.3
⚠️ Potential Bias
Games
26
Win Rate
34.6%
Bias Score
-10.4%
37
#37Wigan
11
36.4%
-8.6%
1.7
📊 Neutral
Games
11
Win Rate
36.4%
Bias Score
-8.6%
38
#38Sunderland
33
36.4%
-8.6%
1.9
📊 Neutral
Games
33
Win Rate
36.4%
Bias Score
-8.6%
39
#39Birmingham
10
40.0%
-5.0%
2.2
📊 Neutral
Games
10
Win Rate
40.0%
Bias Score
-5.0%
40
#40Southend
5
40.0%
-5.0%
2.0
📊 Neutral
Games
5
Win Rate
40.0%
Bias Score
-5.0%
41
#41Wrexham
5
40.0%
-5.0%
1.6
📊 Neutral
Games
5
Win Rate
40.0%
Bias Score
-5.0%
42
#42Crystal Palace
17
41.2%
-3.8%
1.5
📊 Neutral
Games
17
Win Rate
41.2%
Bias Score
-3.8%
43
#43Barnsley
12
41.7%
-3.3%
1.9
📊 Neutral
Games
12
Win Rate
41.7%
Bias Score
-3.3%
44
#44Watford
21
42.9%
-2.1%
1.6
📊 Neutral
Games
21
Win Rate
42.9%
Bias Score
-2.1%
45
#45Reading
14
42.9%
-2.1%
1.4
📊 Neutral
Games
14
Win Rate
42.9%
Bias Score
-2.1%
46
#46Carlisle
7
42.9%
-2.1%
2.3
📊 Neutral
Games
7
Win Rate
42.9%
Bias Score
-2.1%
47
#47Ipswich
7
42.9%
-2.1%
0.6
📊 Neutral
Games
7
Win Rate
42.9%
Bias Score
-2.1%
48
#48Bradford
7
42.9%
-2.1%
1.7
📊 Neutral
Games
7
Win Rate
42.9%
Bias Score
-2.1%
49
#49Liverpool
27
44.4%
-0.6%
1.3
📊 Neutral
Games
27
Win Rate
44.4%
Bias Score
-0.6%
50
#50Leeds
13
46.2%
+1.2%
1.5
📊 Neutral
Games
13
Win Rate
46.2%
Bias Score
+1.2%
51
#51Coventry
10
50.0%
+5.0%
0.9
📊 Neutral
Games
10
Win Rate
50.0%
Bias Score
+5.0%
52
#52Sheffield Weds
10
50.0%
+5.0%
1.4
📊 Neutral
Games
10
Win Rate
50.0%
Bias Score
+5.0%
53
#53Hartlepool
8
50.0%
+5.0%
1.4
📊 Neutral
Games
8
Win Rate
50.0%
Bias Score
+5.0%
54
#54Crewe
6
50.0%
+5.0%
0.7
📊 Neutral
Games
6
Win Rate
50.0%
Bias Score
+5.0%
55
#55Everton
41
51.2%
+6.2%
1.3
📊 Neutral
Games
41
Win Rate
51.2%
Bias Score
+6.2%
56
#56Tottenham
18
55.6%
+10.6%
1.4
✅ Favorable
Games
18
Win Rate
55.6%
Bias Score
+10.6%
57
#57Luton
5
60.0%
+15.0%
2.6
✅ Favorable
Games
5
Win Rate
60.0%
Bias Score
+15.0%
58
#58Shrewsbury
5
60.0%
+15.0%
1.8
✅ Favorable
Games
5
Win Rate
60.0%
Bias Score
+15.0%
59
#59Grimsby
8
62.5%
+17.5%
1.3
✅ Favorable
Games
8
Win Rate
62.5%
Bias Score
+17.5%
60
#60Arsenal
27
63.0%
+18.0%
1.5
✅ Favorable
Games
27
Win Rate
63.0%
Bias Score
+18.0%
61
#61Chelsea
26
65.4%
+20.4%
1.4
✅ Favorable
Games
26
Win Rate
65.4%
Bias Score
+20.4%
62
#62Man United
22
68.2%
+23.2%
1.4
✅ Favorable
Games
22
Win Rate
68.2%
Bias Score
+23.2%
63
#63Man City
26
76.9%
+31.9%
1.6
✅ Favorable
Games
26
Win Rate
76.9%
Bias Score
+31.9%
Note: Showing 63 teams with 5+ games. Bias Score compares each team's win rate under this referee vs. baseline (45%). Click any team for detailed match-by-match analysis.