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 K Friend →•View All Referees for Birmingham →

🧑‍⚖️ Referee Analysis⚠️ BIAS DETECTED

K FriendvsBirmingham

Analysis based on 10 matches since 2000

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

Wins

Draws

Losses

When K Friend officiates Birmingham matches, the statistics reveal a notable negative pattern. Based on 10 matches spanning multiple seasons, our comprehensive analysis shows Birmingham achieves a 30% win rate under K Friend, 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, Birmingham has won 15 percentage points fewer games than expected. For bettors and fantasy managers, this historical trend suggests extra caution when K Friend is appointed.

The Bias Meter™

Bias Level-15.0%

Bias AgainstNeutralFavorable

Match History

10 matches under this referee

Date	Opponent	Score	Result	Cards	Division
8 Nov 2014	Cardiff(H)	0 - 0	DRAW	🟨 1🟥 1	Championship
1 May 2011	Wolves(H)	1 - 1	DRAW	🟨 3🟥 1	Premier League
2 Feb 2011	Man City(H)	2 - 2	DRAW	—	Premier League
4 Dec 2010	Tottenham(H)	1 - 1	DRAW	🟨 1	Premier League
29 Aug 2010	Bolton(A)	2 - 2	DRAW	🟨 3	Premier League
9 May 2010	Bolton(A)	1 - 2	LOSS	🟨 5	Premier League
3 Oct 2009	Burnley(A)	1 - 2	LOSS	🟨 3	Premier League
16 Sept 2008	Bristol City(A)	2 - 1	WIN	🟨 3	Championship
4 Mar 2007	Cardiff(H)	1 - 0	WIN	🟨 1	Championship
26 Dec 2006	QPR(H)	2 - 1	WIN	🟨 1	Championship

Frequently Asked Questions

Detailed Statistics

Win Rate (Under Ref)30.0%

Baseline Win Rate45%

Bias Score-15.0%

Cards for Birmingham

🟨 Yellows / Game2.10

🟥 Reds / Game0.20

Cards for Opponents

🟨 Opp Yellows / Game1.80

🟥 Opp Reds / Game0.10

💰

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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