KIndex Metrics

The KIndex model evaluates player performance through a structured set of football metrics derived from match events. Each recorded action performed during a match contributes either positive or negative performance points depending on its impact on the game. These metrics are designed to capture all phases of football performance, ensuring that player evaluation reflects contributions in defense, possession, and attack.
Every event recorded during a match can influence the final KIndex score. Positive contributions increase the rating, while negative actions reduce it.

Metric Categories

KIndex metrics are organized into five major categories:
  1. Administrative Metrics
  2. Goalkeeping Metrics
  3. Defensive Metrics
  4. Possession Metrics
  5. Offensive Metrics
Each category measures a specific aspect of player performance.

Administrative Metrics

Administrative metrics track basic player participation and discipline during a match. These indicators reflect a player’s involvement and adherence to the rules of the game.
ActionCriteriaPoints
Minutes Played≥ 60 minutes+2
Minutes Played< 60 minutes+1
Fouls AwardedEvery 2 fouls earned+1
Fouls CommittedEvery 2 fouls committed-1
Penalty AwardedEach penalty earned+3
Penalty CommittedEach penalty conceded-2
OffsideEvery 4 offsides-1
Yellow CardSingle yellow card-1
Second YellowAdditional yellow card-1
Red CardStraight red card-3
These metrics ensure that player discipline and match participation are incorporated into the performance evaluation.

Goalkeeping Metrics

Goalkeeping metrics measure actions that prevent goals and protect the defensive structure.
ActionCriteriaPoints
Shot SavedEvery 2 saves+1
Cross SavedEvery 3 crosses saved+1
Penalty SavedEach penalty saved+8
1-on-1 SavedEach 1v1 situation saved+6
These actions reward goalkeepers for critical defensive interventions that prevent scoring opportunities.

Defensive Metrics

Defensive metrics evaluate a player’s ability to stop attacks, recover possession, and protect the goal.
ActionCriteriaPoints
Clean Sheet≥ 60 minutes played+1
Goal ConcededEach goal conceded-1
Own GoalEach own goal-2
Goal SavedDefensive block preventing a goal+8 (Defender)
Goal SavedDefensive block preventing a goal+10 (Midfielder)
Goal SavedDefensive block preventing a goal+12 (Attacker)
Opportunity SavedCritical defensive intervention+1
Aerial Duel WonEvery 2 duels won+1
Ball LostEvery 6 losses-1
Ball RecoveredEvery 6 recoveries+1
Interception ClearEvery 6 clearances+1
Tackle ClearEvery 6 clearances+1
Tackle WonEvery 2 tackles won+1
Interception WonEvery 2 interceptions+1
These metrics highlight players who break opposition attacks and restore defensive stability.

Possession Metrics

Possession metrics measure a player’s technical ability to control the ball and maintain team structure.
ActionCriteriaPoints
Successful CrossEvery 2 successful crosses+1
Successful DribbleEvery 2 successful dribbles+1
Passing Accuracy≥ 30 passes, 70–79% accuracy+1
Passing Accuracy≥ 30 passes, 80–89% accuracy+2
Passing Accuracy≥ 30 passes, ≥ 90% accuracy+3
These metrics reward players who contribute to ball circulation, buildup play, and offensive progression.

Offensive Metrics

Offensive metrics capture actions that directly influence scoring opportunities and attacking effectiveness.
ActionCriteriaPoints
Goal (Open Play)Goalkeeper+15
Goal (Open Play)Defender+12
Goal (Open Play)Midfielder+10
Goal (Open Play)Attacker+8
Penalty ScoredEach penalty goal+4
Direct Free Kick GoalEach free kick scored+8
AssistEach assist+6
Key PassPass leading to a shot+1
Penalty MissedEach missed penalty-3
1-on-1 MissedEach missed 1-on-1-1
Attempt on TargetGoalkeeper+1
Attempt on TargetEvery 2 attempts (non-GK players)+1
These metrics measure the direct attacking contribution of a player, including goal creation, scoring efficiency, and chance generation.

Balanced Performance Evaluation

The KIndex metric framework ensures that player evaluation reflects a balanced view of football performance. Players accumulate points through contributions in multiple areas of the game, including:
  • defensive stability
  • possession control
  • attacking productivity
  • discipline and match involvement
By combining these metrics, the KIndex model produces a comprehensive representation of a player’s match influence.

Next Section

The next page explains how accumulated performance points are converted into the final KIndex rating using a calibrated scoring scale. Continue to KIndex Scale to learn how raw scores are transformed into standardized player ratings.