What is the Bias Score and how is it calculated?

The Bias Score compares a team's win rate under a specific referee to their baseline win rate (45%). A negative score suggests the team performs worse than average under that referee.

What sample size is considered reliable?

We recommend at least 5 games for initial patterns and 10+ games for high confidence.

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🧑‍⚖️ Referee Analysis

A WileyvsArsenal

Analysis based on 37 matches since 2000

* Note: Detailed card statistics for matches before 2005 may be incomplete.

Wins

Draws

Losses

When A Wiley officiates Arsenal matches, the statistics reveal a favorable pattern. Based on 37 matches spanning multiple seasons, our comprehensive analysis shows Arsenal achieves a 59.5% win rate under A Wiley, compared to the 45% baseline expected for teams at this level. This positive 14.5 percentage point difference suggests a meaningful pattern worth examining. The data includes detailed card statistics, match outcomes, and historical trends to provide football fans, bettors, and analysts with evidence-based insights into this referee-team dynamic.

✅FAVORABLE RECORD

✅ FAVORABLE RECORD

This team has an above-average win rate when this referee officiates.

Bias Score

+14.5%

Matches Analyzed

The Bias Meter™

Bias Level+14.5%

Bias AgainstNeutralFavorable

Match History

37 matches under this referee

Date	Opponent	Score	Result	Cards	Division
20 Jan 2010	Bolton(H)	4 - 2	WIN	Arsenal: 🟨 1 Bolton: 🟨 2	Premier League
30 Dec 2009	Portsmouth(A)	4 - 1	WIN	Arsenal: — Portsmouth: 🟨 2	Premier League
21 Nov 2009	Sunderland(A)	0 - 1	LOSS	Arsenal: 🟨 1 Sunderland: 🟨 2	Premier League
11 Apr 2009	Wigan(A)	4 - 1	WIN	Arsenal: 🟨 3 Wigan: 🟨 3	Premier League
21 Feb 2009	Sunderland(H)	0 - 0	DRAW	Arsenal: 🟨 2 Sunderland: 🟨 2	Premier League
17 Jan 2009	Hull(A)	3 - 1	WIN	Arsenal: 🟨 1 Hull: 🟨 1	Premier League
28 Dec 2008	Portsmouth(H)	1 - 0	WIN	Arsenal: — Portsmouth: 🟨 1	Premier League
22 Nov 2008	Man City(A)	0 - 3	LOSS	Arsenal: 🟨 1 Man City: —	Premier League
27 Sept 2008	Hull(H)	1 - 2	LOSS	Arsenal: 🟨 2 Hull: 🟨 1	Premier League
4 May 2008	Everton(H)	1 - 0	WIN	Arsenal: — Everton: 🟨 1	Premier League
16 Dec 2007	Chelsea(H)	1 - 0	WIN	Arsenal: 🟨 5 Chelsea: 🟨 5	Premier League
29 Sept 2007	West Ham(A)	1 - 0	WIN	Arsenal: 🟨 2 West Ham: 🟨 2	Premier League
19 Aug 2007	Blackburn(A)	1 - 1	DRAW	Arsenal: 🟨 4 Blackburn: 🟨 4🟥 1	Premier League
6 May 2007	Chelsea(H)	1 - 1	DRAW	Arsenal: 🟨 1 Chelsea: 🟨 2🟥 1	Premier League
10 Dec 2006	Chelsea(A)	1 - 1	DRAW	Arsenal: 🟨 2 Chelsea: 🟨 2	Premier League
22 Oct 2006	Reading(A)	4 - 0	WIN	Arsenal: — Reading: —	Premier League
23 Sept 2006	Sheffield United(H)	3 - 0	WIN	Arsenal: 🟨 2 Sheffield United: 🟨 1	Premier League
21 Jan 2006	Everton(A)	0 - 1	LOSS	Arsenal: 🟨 2🟥 1 Everton: 🟨 4	Premier League
5 Nov 2005	Sunderland(H)	3 - 1	WIN	Arsenal: — Sunderland: 🟨 1	Premier League
19 Sept 2005	Everton(H)	2 - 0	WIN	Arsenal: 🟨 2 Everton: 🟨 3	Premier League
11 May 2005	Everton(H)	7 - 0	WIN	Arsenal: 🟨 2 Everton: —	Premier League
2 Apr 2005	Norwich(H)	4 - 1	WIN	Arsenal: 🟨 1 Norwich: —	Premier League
26 Feb 2005	Southampton(A)	1 - 1	DRAW	Arsenal: 🟨 1🟥 1 Southampton: 🟨 1🟥 1	Premier League
28 Nov 2004	Liverpool(A)	1 - 2	LOSS	Arsenal: 🟨 2 Liverpool: —	Premier League
9 Apr 2004	Liverpool(H)	4 - 2	WIN	Arsenal: 🟨 3 Liverpool: 🟨 1	Premier League
13 Mar 2004	Blackburn(A)	2 - 0	WIN	Arsenal: 🟨 1 Blackburn: 🟨 1	Premier League
1 Feb 2004	Man City(H)	2 - 1	WIN	Arsenal: 🟨 2 Man City: 🟨 2🟥 1	Premier League
7 Jan 2004	Everton(A)	1 - 1	DRAW	Arsenal: 🟨 3 Everton: —	Premier League
13 Sept 2003	Portsmouth(H)	1 - 1	DRAW	Arsenal: 🟨 2 Portsmouth: 🟨 3	Premier League
4 May 2003	Leeds(H)	2 - 3	LOSS	Arsenal: 🟨 2 Leeds: 🟨 1	Premier League
23 Mar 2003	Everton(H)	2 - 1	WIN	Arsenal: 🟨 2 Everton: 🟨 1	Premier League
28 Sept 2002	Leeds(A)	4 - 1	WIN	Arsenal: 🟨 2 Leeds: 🟨 4	Premier League
21 Apr 2002	Ipswich(H)	2 - 0	WIN	Arsenal: 🟨 1 Ipswich: —	Premier League
9 Dec 2001	Aston Villa(H)	3 - 2	WIN	Arsenal: 🟨 4 Aston Villa: —	Premier League
15 Sept 2001	Fulham(A)	3 - 1	WIN	Arsenal: 🟨 4 Fulham: 🟨 3	Premier League
15 May 2001	Newcastle(A)	0 - 0	DRAW	Arsenal: — Newcastle: 🟨 1	Premier League
9 Sept 2000	Bradford(A)	1 - 1	DRAW	Arsenal: 🟨 2 Bradford: —	Premier League

20 Jan 2010

Bolton (H)

Premier League

WIN

4 - 2

Cards Awarded:

Arsenal:

🟨 1

Bolton:

🟨 2

30 Dec 2009

Portsmouth (A)

Premier League

WIN

4 - 1

Cards Awarded:

Arsenal:

—

Portsmouth:

🟨 2

21 Nov 2009

Sunderland (A)

Premier League

LOSS

0 - 1

Cards Awarded:

Arsenal:

🟨 1

Sunderland:

🟨 2

11 Apr 2009

Wigan (A)

Premier League

WIN

4 - 1

Cards Awarded:

Arsenal:

🟨 3

Wigan:

🟨 3

21 Feb 2009

Sunderland (H)

Premier League

DRAW

0 - 0

Cards Awarded:

Arsenal:

🟨 2

Sunderland:

🟨 2

17 Jan 2009

Hull (A)

Premier League

WIN

3 - 1

Cards Awarded:

Arsenal:

🟨 1

Hull:

🟨 1

28 Dec 2008

Portsmouth (H)

Premier League

WIN

1 - 0

Cards Awarded:

Arsenal:

—

Portsmouth:

🟨 1

22 Nov 2008

Man City (A)

Premier League

LOSS

0 - 3

Cards Awarded:

Arsenal:

🟨 1

Man City:

—

27 Sept 2008

Hull (H)

Premier League

LOSS

1 - 2

Cards Awarded:

Arsenal:

🟨 2

Hull:

🟨 1

4 May 2008

Everton (H)

Premier League

WIN

1 - 0

Cards Awarded:

Arsenal:

—

Everton:

🟨 1

16 Dec 2007

Chelsea (H)

Premier League

WIN

1 - 0

Cards Awarded:

Arsenal:

🟨 5

Chelsea:

🟨 5

29 Sept 2007

West Ham (A)

Premier League

WIN

1 - 0

Cards Awarded:

Arsenal:

🟨 2

West Ham:

🟨 2

19 Aug 2007

Blackburn (A)

Premier League

DRAW

1 - 1

Cards Awarded:

Arsenal:

🟨 4

Blackburn:

🟨 4🟥 1

6 May 2007

Chelsea (H)

Premier League

DRAW

1 - 1

Cards Awarded:

Arsenal:

🟨 1

Chelsea:

🟨 2🟥 1

10 Dec 2006

Chelsea (A)

Premier League

DRAW

1 - 1

Cards Awarded:

Arsenal:

🟨 2

Chelsea:

🟨 2

22 Oct 2006

Reading (A)

Premier League

WIN

4 - 0

Cards Awarded:

Arsenal:

—

Reading:

—

23 Sept 2006

Sheffield United (H)

Premier League

WIN

3 - 0

Cards Awarded:

Arsenal:

🟨 2

Sheffield United:

🟨 1

21 Jan 2006

Everton (A)

Premier League

LOSS

0 - 1

Cards Awarded:

Arsenal:

🟨 2🟥 1

Everton:

🟨 4

5 Nov 2005

Sunderland (H)

Premier League

WIN

3 - 1

Cards Awarded:

Arsenal:

—

Sunderland:

🟨 1

19 Sept 2005

Everton (H)

Premier League

WIN

2 - 0

Cards Awarded:

Arsenal:

🟨 2

Everton:

🟨 3

11 May 2005

Everton (H)

Premier League

WIN

7 - 0

Cards Awarded:

Arsenal:

🟨 2

Everton:

—

2 Apr 2005

Norwich (H)

Premier League

WIN

4 - 1

Cards Awarded:

Arsenal:

🟨 1

Norwich:

—

26 Feb 2005

Southampton (A)

Premier League

DRAW

1 - 1

Cards Awarded:

Arsenal:

🟨 1🟥 1

Southampton:

🟨 1🟥 1

28 Nov 2004

Liverpool (A)

Premier League

LOSS

1 - 2

Cards Awarded:

Arsenal:

🟨 2

Liverpool:

—

9 Apr 2004

Liverpool (H)

Premier League

WIN

4 - 2

Cards Awarded:

Arsenal:

🟨 3

Liverpool:

🟨 1

13 Mar 2004

Blackburn (A)

Premier League

WIN

2 - 0

Cards Awarded:

Arsenal:

🟨 1

Blackburn:

🟨 1

1 Feb 2004

Man City (H)

Premier League

WIN

2 - 1

Cards Awarded:

Arsenal:

🟨 2

Man City:

🟨 2🟥 1

7 Jan 2004

Everton (A)

Premier League

DRAW

1 - 1

Cards Awarded:

Arsenal:

🟨 3

Everton:

—

13 Sept 2003

Portsmouth (H)

Premier League

DRAW

1 - 1

Cards Awarded:

Arsenal:

🟨 2

Portsmouth:

🟨 3

4 May 2003

Leeds (H)

Premier League

LOSS

2 - 3

Cards Awarded:

Arsenal:

🟨 2

Leeds:

🟨 1

23 Mar 2003

Everton (H)

Premier League

WIN

2 - 1

Cards Awarded:

Arsenal:

🟨 2

Everton:

🟨 1

28 Sept 2002

Leeds (A)

Premier League

WIN

4 - 1

Cards Awarded:

Arsenal:

🟨 2

Leeds:

🟨 4

21 Apr 2002

Ipswich (H)

Premier League

WIN

2 - 0

Cards Awarded:

Arsenal:

🟨 1

Ipswich:

—

9 Dec 2001

Aston Villa (H)

Premier League

WIN

3 - 2

Cards Awarded:

Arsenal:

🟨 4

Aston Villa:

—

15 Sept 2001

Fulham (A)

Premier League

WIN

3 - 1

Cards Awarded:

Arsenal:

🟨 4

Fulham:

🟨 3

15 May 2001

Newcastle (A)

Premier League

DRAW

0 - 0

Cards Awarded:

Arsenal:

—

Newcastle:

🟨 1

9 Sept 2000

Bradford (A)

Premier League

DRAW

1 - 1

Cards Awarded:

Arsenal:

🟨 2

Bradford:

—

Frequently Asked Questions

Detailed Statistics

Win Rate (Under Ref)59.5%

Baseline Win Rate45%

Bias Score+14.5%

Cards for Arsenal

🟨 Yellows / Game1.76

🟥 Reds / Game0.05

Cards for Opponents

🟨 Opp Yellows / Game1.54

🟥 Opp Reds / Game0.11

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A WileyvsArsenal

✅ FAVORABLE RECORD

The Bias Meter™

Match History

Frequently Asked Questions

What is the Bias Score and how is it calculated?

What sample size is considered reliable?

Why do referees show bias against certain teams?

Should I use this data for betting decisions?

How far back does the data go?

What does a strong bias score mean in practice?

Detailed Statistics

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