Evaluation of soccer team defense based on prediction models of ball recovery and being attacked

• URL: http://arxiv.org/abs/2103.09627v2
• Date: Fri, 19 Mar 2021 00:42:56 GMT
• Title: Evaluation of soccer team defense based on prediction models of ball recovery and being attacked
• Authors: Kosuke Toda, Masakiyo Teranishi, Keisuke Kushiro, Keisuke Fujii
• Abstract summary: We propose a method to evaluate team defense based on the prediction of ball recovery and being attacked. Using data from 45 soccer matches, we examined the relationship between the proposed index and team performance.
• Score: 0.8921166277011345
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: With the development of measurement technology, data on the movements of actual games in various sports are available and are expected to be used for planning and evaluating the tactics and strategy. In particular, defense in team sports is generally difficult to be evaluated because of the lack of statistical data. Conventional evaluation methods based on predictions of scores are considered unreliable and predict rare events throughout the entire game, and it is difficult to evaluate various plays leading up to a score. On the other hand, evaluation methods based on certain plays that lead to scoring and dominant regions are sometimes unsuitable to evaluate the performance (e.g., goals scored) of players and teams. In this study, we propose a method to evaluate team defense from a comprehensive perspective related to team performance based on the prediction of ball recovery and being attacked, which occur more frequently than goals, using player actions and positional data of all players and the ball. Using data from 45 soccer matches, we examined the relationship between the proposed index and team performance in actual matches and throughout a season. Results show that the proposed classifiers more accurately predicted the true events than the existing classifiers which were based on rare events (i.e., goals). Also, the proposed index had a moderate correlation with the long-term outcomes of the season. These results suggest that the proposed index might be a more reliable indicator rather than winning or losing with the inclusion of accidental factors.

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