Are Premier League Referees Biased Towards the "Big Six"?

We examined the refereeing decisions in the 101 matches from the 2024/25 season to date, where a Big 6 club faced one of the 14 other clubs from the rest of the Premier League to determine if referees are indeed biased.

The debate over referee bias in the Premier League has long been a contentious issue, with supporters of smaller clubs often claiming that the "Big 6" receive preferential treatment. Contentious penalty decisions, and VAR "inconsistencies" have all sparked heated debates in the 2024/25 season. The "Big 6" - Manchester United, Manchester City, Liverpool, Chelsea, Arsenal, and Tottenham - have historically dominated English football not just in terms of success, but also in financial power and media attention. This analysis seeks to move beyond anecdotal evidence and examine whether data from the current season supports or refutes these claims of bias.

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Methodology & Data Overview

Our analysis examines 101 matches played between Big 6 clubs and the rest of the league in the 2024/25 season. We've tracked three categories of metrics:

1. Possession metrics (overall possession, passes in opposition half)

2. Attacking metrics (touches in opposition box)

3. Referee decision metrics (penalties, free kicks, cards, VAR decisions)

By comparing these metrics, we can establish whether referee decisions correlate with the flow of play or show evidence of systematic bias.

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Free Kicks and Cards

During our research, we analysed the amount of free kicks awarded, yellow cards awarded and red cards awarded. Our findings can be seen below.

Key Stats

Total Free Kicks Awarded:

• Big Six Clubs: 1119

• Other 14 Clubs: 1041

Free Kicks Awarded Per Game:

• Big Six Clubs: 11.1

• Other 14 Clubs: 10.3

Total Yellow Cards Awarded:

• Big Six Clubs: 204

• Other 14 Clubs: 240

Yellow Cards Awarded Per Game:

• Big Six Clubs: 2.0

• Other 14 Clubs: 2.4

Fouls Committed per Yellow Card:

• Big Six Clubs: 5.1

• Other 14 Clubs: 4.7

Total Red Cards Awarded:

• Big Six Clubs: 8

• Other 14 Clubs: 6

Fouls Committed per Red Card:

• Big 6 Clubs: 131.1

• Other 14 Clubs: 188

When looking at the number of free kicks and cards given to the Big Six clubs versus those given to the other 14 clubs, it's clear why fans might sense a possible bias in refereeing.

The trend shown in the data above suggests a bias in the way referees perceive fouls committed against players from the Big Six Clubs. This phenomenon could be attributed to various factors, including the higher-profile nature of these clubs, the star power of their players, and the intense media scrutiny that accompanies their games.

Furthermore, when it comes to disciplinary actions, Big Six clubs see a noticeable decrease in the number of yellow cards issued against their players. This disparity raises questions about the consistency of officiating standards across the league, as it appears that players from the Big Six may be afforded a level of leniency that is not extended to those from smaller clubs.

Can this disparity be explained?

One way this disparity can be explained is by looking at the possession metrics from the 101 games between Big Six Clubs and the rest of the league.

Average Possession:

• Big Six Clubs: 60%

• Other 14 Clubs: 40%

Passes in Opposition Half:

• Big Six Clubs: 25962

• Other 14 Clubs: 12744

Passes in Opposition Half Per Game:

• Big Six Clubs: 257.0

• Other 14 Clubs: 126.2

The above stats can be used to explain the apparent disparity in refereeing decisons in a number of different ways.

1. More Possession Means Less Defending

Possession-based teams spend less time chasing the ball, which reduces their need to make desperate or clumsy tackles. When a team dominates possession, they dictate the tempo of the game and force their opponents into more defensive actions. This naturally leads to fewer fouls because they are not constantly trying to recover the ball through physical challenges.

2. More Passes in the Opposition Half Invite More Fouls

Teams that operate higher up the pitch and play intricate football in the opposition’s half tend to draw more fouls. Quick, technical players who operate in tight spaces are often fouled as defenders try to stop them from progressing. This means the Big Six, who average more passes in attacking areas, are more likely to win free kicks in dangerous positions.

3. Lower Defensive Workload Means Fewer Yellow Cards

Since the Big Six generally spend less time defending deep in their own half, they are less likely to commit reckless challenges that result in yellow cards. In contrast, teams that defend for long periods often resort to tactical fouls, last-ditch tackles, and aggressive pressing—all of which increase the likelihood of picking up bookings.

4. Pressing vs. Desperation Tackles

Elite teams use structured pressing systems to win the ball back rather than resorting to rash challenges. Their defensive work is often more disciplined, using interceptions and positional play rather than reckless fouling. In contrast, teams outside the Big Six may rely more on aggressive, last-resort defending, which leads to more fouls and bookings.

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Penalties

We also looked into the amount of penalties awarded in relation to the amount of touches in the opposition box.

Penalties Awarded:

• Big Six Clubs: 9

• Other 14 Clubs: 8

Touches in Opposition Box:

• Big Six Clubs: 3680

• Other 14 Clubs: 1884

Touches in Opposition Box per Penalty Kick:

• Big Six Clubs: 408.9

• Other 14 Clubs: 235.5

Why Do Big Six Clubs Need More Opposition Box Touches Per Penalty Won?

One of the most surprising statistics in the Premier League is the difference in how often teams win penalties relative to their touches in the opposition box. The Big Six clubs require an average of 408.9 touches in the box to win a penalty, while the other 14 clubs need just 235.5 touches. This suggests that elite teams are winning fewer penalties per attacking action than the rest of the league. But why?

1. Defensive Caution Against the Big Six

When smaller teams face the Big Six, they often adopt a low block and defend deep. In these situations, defenders are more disciplined, avoiding unnecessary tackles in the box to prevent giving away easy penalties. Instead of diving into challenges, they focus on staying compact and blocking passing lanes, making it harder for Big Six players to draw fouls inside the area.

2. More Intricate Play vs. Direct Attacking

The Big Six generally rely on intricate passing and controlled buildup play in the box rather than fast, direct attacks. This means their attacking players are often trying to work shooting angles through combinations rather than driving into the box at full speed. On the other hand, mid-table and lower-table teams often rely on quick counter-attacks, where attackers burst into the box at pace, forcing defenders into desperate, last-ditch challenges—situations that are more likely to result in penalties.

3. Referee Perception and "Fairness Bias"

There is also the possibility of unconscious referee bias. Because the Big Six are expected to dominate games, referees might be less inclined to give them frequent penalties, knowing they already have other advantages such as more possession, better players, and superior tactical setups. Conversely, when an underdog team gets into the box and goes down under contact, referees may be more inclined to give them the benefit of the doubt, seeing it as a rare attacking opportunity.

4. Better Dribblers vs. More Physical Defenders

Big Six attackers are often elite dribblers who can ride challenges rather than going down at the first sign of contact. Their technical ability allows them to stay on their feet and create goal-scoring chances, reducing the number of fouls they draw in the box. In contrast, smaller teams may rely on physical forwards who invite contact, making them more likely to win penalties when challenged.

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VAR Interventions

In the 2024/25 season so far, Big 6 clubs have benefitted from 10 VAR interventions, whilst the other 14 clubs have benefited from 12.

Whilst there isn't much difference between the amount of VAR interventions for Big Six Clubs and for the other 14 Clubs, the fact that the other 14 clubs have more VAR overturns in their favour could hint in a slight bias in on field refereeing decisions.

This potential bias could result in on field referees making more incorrect decisions in favour of the Big Six Clubs, which VAR has to then step in and overturn.

However, the relatively small difference in VAR interventions (10 for the Big Six and 12 for the other 14 clubs) suggests that, over the course of a season, such numbers can be influenced by random variability. Individual match circumstances, referee interpretations, and the subjective nature of certain fouls or handballs can all contribute to this distribution.

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Conclusion: Are Referees Biased Towards the Big Six?

The data from the 2024/25 season provides valuable insight into the long-standing debate over whether Premier League referees favor the Big Six. While some of the statistical disparities might suggest bias, a deeper analysis shows that much of the difference can be explained by playing style, possession dominance, and tactical approaches rather than outright favouritism.

Key Findings:

• More Free Kicks, Fewer Yellow Cards: The Big Six receive slightly more free kicks per game but also commit more fouls per yellow card. This could indicate leniency in officiating, but it is also likely a result of their superior technical ability and possession-based style, which forces opponents into more defensive fouls.

  
  

• Fewer Penalties per Box Touch: The Big Six require significantly more touches in the opposition box per penalty won compared to other teams. This could be due to their opponents' defensive discipline, intricate attacking play, or even referee hesitation in awarding them frequent penalties.

  
  

• VAR Interventions: The relatively balanced number of VAR interventions benefiting both groups suggests that while there may be slight inconsistencies in on-field decisions, VAR is playing a corrective role in maintaining fairness.

Final Verdict:While the numbers suggest that the Big Six receive some advantages in terms of fewer disciplinary actions and more free kicks, these differences can largely be attributed to tactical and stylistic factors rather than systematic referee bias. However, the discrepancy in penalties awarded per box touch and the potential need for VAR to overturn decisions benefiting elite teams raise questions about unconscious bias in key moments.

Ultimately, while there is no definitive proof of intentional favoritism, the data does support the idea that Big Six clubs benefit from certain officiating trends—whether due to their style of play, reputation, or the psychological pressures referees face when making high-stakes decisions in high-profile matches.