A team metric, quantifying how many defensive actions (defensive duels, loose ball duels, interceptions, tackles) a team is doing per minute of opponent ball possession.
Challenge intensity reflects how often the team is actively trying to recover the ball when the opponent is in possession (thus, it's correlated to PPDA). The higher this number, the more intense the team is in challenges. In top five European leagues for 2018/2019 the average challenge intensity is 6.04. The best team in Challenge intensity in top five leagues 2018/2019 is Eibar with 7.7; Parma, Nürnberg and Angers have the least (5).