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 R Styles →•View All Referees for Sunderland →

🧑‍⚖️ Referee Analysis⚠️ BIAS DETECTED

R StylesvsSunderland

Analysis based on 16 matches since 2000

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

Wins

Draws

Losses

When R Styles officiates Sunderland matches, the statistics reveal a severe negative pattern. Based on 16 matches spanning multiple seasons, our comprehensive analysis shows Sunderland achieves a 6.3% win rate under R Styles, compared to the 45% baseline expected for teams at this level. This negative 38.8 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

-38.8%

Matches Analyzed

⚠️

Notable Negative Pattern

With a bias score of -38.8%, this ranks among the more significant negative patterns in our database. Over 16 matches, Sunderland has won 39 percentage points fewer games than expected. For bettors and fantasy managers, this historical trend suggests extra caution when R Styles is appointed.

The Bias Meter™

Bias Level-38.8%

Bias AgainstNeutralFavorable

Match History

16 matches under this referee

Date	Opponent	Score	Result	Cards	Division
9 May 2009	Bolton(A)	0 - 0	DRAW	—	Premier League
11 Apr 2009	Man United(H)	1 - 2	LOSS	🟨 1	Premier League
7 Feb 2009	Stoke(H)	2 - 0	WIN	🟨 2	Premier League
28 Dec 2008	Everton(A)	0 - 3	LOSS	🟨 4	Premier League
13 Sept 2008	Wigan(A)	1 - 1	DRAW	🟨 1	Premier League
2 Feb 2008	Liverpool(A)	0 - 3	LOSS	🟨 2	Premier League
2 Jan 2008	Blackburn(A)	0 - 1	LOSS	🟨 4🟥 1	Premier League
7 Oct 2007	Arsenal(A)	2 - 3	LOSS	🟨 2🟥 1	Premier League
14 Apr 2006	Man United(A)	0 - 0	DRAW	🟨 1	Premier League
4 Feb 2006	West Ham(A)	0 - 2	LOSS	🟨 3🟥 1	Premier League
31 Dec 2005	Everton(H)	0 - 1	LOSS	🟨 1	Premier League
23 Oct 2005	Newcastle(A)	2 - 3	LOSS	🟨 2	Premier League
22 Mar 2003	West Ham(A)	0 - 2	LOSS	—	Premier League
8 Feb 2003	Tottenham(A)	1 - 4	LOSS	🟨 2	Premier League
23 Nov 2002	Birmingham(H)	0 - 1	LOSS	🟨 3	Premier League
24 Aug 2002	Everton(H)	0 - 1	LOSS	🟨 1	Premier League

Frequently Asked Questions

Detailed Statistics

Win Rate (Under Ref)6.3%

Baseline Win Rate45%

Bias Score-38.8%

Cards for Sunderland

🟨 Yellows / Game1.81

🟥 Reds / Game0.19

Cards for Opponents

🟨 Opp Yellows / Game1.19

🟥 Opp Reds / Game0.13

💰

Betting Outlook

TIPSTER INSIGHT

🟥

RED CARD RISK

Red card frequency: 0.19 per game

Higher than average dismissal rate in this matchup.

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

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