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.

← Back to Home•View All Teams for S Attwell →•View All Referees for Bolton →

🧑‍⚖️ Referee Analysis⚠️ BIAS DETECTED

S AttwellvsBolton

Analysis based on 10 matches since 2000

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

Wins

Draws

Losses

When S Attwell officiates Bolton matches, the statistics reveal a notable negative pattern. Based on 10 matches spanning multiple seasons, our comprehensive analysis shows Bolton achieves a 30% win rate under S Attwell, compared to the 45% baseline expected for teams at this level. This negative 15.0 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.

⚠️POTENTIAL BIAS

⚠️ POTENTIAL BIAS DETECTED

This team performs notably worse under this referee compared to their overall average.

Bias Score

-15.0%

Matches Analyzed

⚠️

Notable Negative Pattern

With a bias score of -15.0%, this ranks among the more significant negative patterns in our database. Over 10 matches, Bolton has won 15 percentage points fewer games than expected. For bettors and fantasy managers, this historical trend suggests extra caution when S Attwell is appointed.

The Bias Meter™

Bias Level-15.0%

Bias AgainstNeutralFavorable

Match History

10 matches under this referee

Date	Opponent	Score	Result	Cards	Division
12 Sept 2017	Sheffield United(H)	0 - 1	LOSS	🟨 3	Championship
6 Feb 2016	Rotherham(H)	2 - 1	WIN	—	Championship
7 Nov 2015	Bristol City(H)	0 - 0	DRAW	🟨 3	Championship
18 Aug 2015	Milton Keynes Dons(A)	0 - 1	LOSS	🟨 3	Championship
19 Dec 2014	Millwall(A)	1 - 0	WIN	🟨 3	Championship
1 Oct 2014	Fulham(A)	0 - 4	LOSS	🟨 2	Championship
3 Dec 2011	Tottenham(A)	0 - 3	LOSS	🟨 2🟥 1	Premier League
11 Sept 2010	Arsenal(A)	1 - 4	LOSS	🟨 2🟥 1	Premier League
14 Aug 2010	Fulham(H)	0 - 0	DRAW	🟨 1	Premier League
17 Apr 2010	Stoke(A)	2 - 1	WIN	🟨 2	Premier League

Frequently Asked Questions

Detailed Statistics

Win Rate (Under Ref)30.0%

Baseline Win Rate45%

Bias Score-15.0%

Cards for Bolton

🟨 Yellows / Game2.10

🟥 Reds / Game0.20

Cards for Opponents

🟨 Opp Yellows / Game1.50

🟥 Opp Reds / Game0.00

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Betting Outlook

TIPSTER INSIGHT

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RED CARD RISK

Red card frequency: 0.2 per game

Higher than average dismissal rate in this matchup.

⚠️ This is statistical analysis, not betting advice. Gamble responsibly.

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