Defensive Unit Cohesion (Injury Impact)

Overview

Analyzes the on-field experience and performance of a specific defensive unit. This pillar provides a precise measure of a team's defensive solidity, which is crucial when injuries or rotations disrupt the primary backline.

What It Does

This pillar moves beyond general team statistics by focusing on the exact group of defenders starting a match. It aggregates historical data for that specific lineup, calculating their collective clean sheet percentage, goals conceded per 90, and overall match record. The analysis highlights the performance drop-off or improvement compared to the team's standard defensive unit.

Why It Matters

A team's defensive capability is not constant; it heavily depends on the cohesion of the players on the field. This pillar provides a data-driven edge by identifying vulnerabilities in makeshift backlines that standard team form analysis often misses.

How It Works

First, the pillar identifies the starting defensive lineup for an upcoming match. It then queries historical match databases to find all previous games where that exact combination of players started together. Key performance metrics are calculated for this specific unit, which are then benchmarked against the team's season averages to generate a cohesion and impact score.

Methodology

The core metric is the 'Unit Cohesion Score', calculated by combining the number of matches the specific unit has started together with their historical clean sheet percentage and goals conceded per 90 minutes. An 'Injury Impact' modifier is applied, representing the statistical difference in expected goals against (xGA) when this unit plays versus the team's primary, most-used defensive lineup over the last 20 games.

Edge & Advantage

It offers a granular view of defensive strength, allowing you to spot overvalued or undervalued teams based on lineup changes that the broader market overlooks.

Key Indicators

• Unit Matches Started Together

  high

  The total number of matches the specific defensive unit has started together, indicating their level of experience as a group.

• Unit Clean Sheet %

  high

  The percentage of matches where this specific unit kept a clean sheet when starting together.

• Unit Goals Conceded per 90

  medium

  The average number of goals the team concedes per 90 minutes when this specific unit is on the field.

Data Sources

• FBref

  Provides comprehensive historical match logs, including detailed starting lineups and player statistics.

• WhoScored

  Offers player ratings, positional data, and team statistics for past matches across major leagues.

• Transfermarkt

  Contains historical lineup information and detailed injury histories for individual players.

Example Questions This Pillar Answers

• → Will Manchester United keep a clean sheet against Liverpool?
• → Will the Chelsea vs. Arsenal match have over or under 2.5 total goals?
• → Will both teams score in the Inter Milan vs. Juventus match?

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