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 A Hall →•View All Referees for Derby →

🧑‍⚖️ Referee Analysis⚠️ BIAS DETECTED

A HallvsDerby

Analysis based on 6 matches since 2000

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

Wins

Draws

Losses

When A Hall officiates Derby matches, the statistics reveal a severe negative pattern. Based on 6 matches spanning multiple seasons, our comprehensive analysis shows Derby achieves a 16.7% win rate under A Hall, compared to the 45% baseline expected for teams at this level. This negative 28.3 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.

🚨STRONG BIAS DETECTED

🚨 STRONG BIAS DETECTED

This referee has a significantly negative history with this team. Win rate is severely below average.

Bias Score

-28.3%

Matches Analyzed

⚠️

Notable Negative Pattern

With a bias score of -28.3%, this ranks among the more significant negative patterns in our database. Over 6 matches, Derby has won 28 percentage points fewer games than expected. For bettors and fantasy managers, this historical trend suggests extra caution when A Hall is appointed.

The Bias Meter™

Bias Level-28.3%

Bias AgainstNeutralFavorable

Match History

6 matches under this referee

Date	Opponent	Score	Result	Cards	Division
26 Jan 2010	Plymouth(A)	0 - 1	LOSS	🟨 6	Championship
21 Oct 2008	Blackpool(A)	2 - 3	LOSS	🟨 2	Championship
18 Feb 2006	Norwich(A)	0 - 2	LOSS	🟨 1	Championship
3 Dec 2005	Norwich(H)	2 - 0	WIN	🟨 1	Championship
22 Oct 2005	Hull(A)	1 - 2	LOSS	🟨 7🟥 1	Championship
7 Sept 2002	Burnley(H)	1 - 2	LOSS	🟨 2	Championship

Frequently Asked Questions

Detailed Statistics

Win Rate (Under Ref)16.7%

Baseline Win Rate45%

Bias Score-28.3%

Cards for Derby

🟨 Yellows / Game3.17

🟥 Reds / Game0.17

Cards for Opponents

🟨 Opp Yellows / Game2.17

🟥 Opp Reds / Game0.00

💰

Betting Outlook

TIPSTER INSIGHT

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RED CARD RISK

Red card frequency: 0.17 per game

Higher than average dismissal rate in this matchup.

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

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