The wider context of performance analysis and it application in the football coaching process

The evolving role of PA and the associated proliferation of positions and internships within high performance sport has driven consideration for a change, or at least a broadening, of emphasis for use of PA analysis. In order to explore the evolution of PA from both an academic and practitioner perspective this paper considers the wider conceptual use of PA analysis. In establishing this, the paper has 4 key aims: (1) To establish working definitions of PA and where it sits within the contemporary sports science and coaching process continuum; (2) To consider how PA is currently used in relation to data generation; (3) To explore how PA could be used to ensure transfer of information, and; (4) To give consideration to the practical constrains potentially faced by coach and analyst when implementing PA strategies in the future

PlayeRank: data-driven performance evaluation and player ranking in soccer via a machine learning approach

The problem of evaluating the performance of soccer players is attracting the interest of many companies and the scientific community, thanks to the availability of massive data capturing all the events generated during a match (e.g., tackles, passes, shots, etc.). Unfortunately, there is no consolidated and widely accepted metric for measuring performance quality in all of its facets. In this paper, we design and implement PlayeRank, a data-driven framework that offers a principled multi-dimensional and role-aware evaluation of the performance of soccer players. We build our framework by deploying a massive dataset of soccer-logs and consisting of millions of match events pertaining to four seasons of 18 prominent soccer competitions. By comparing PlayeRank to known algorithms for performance evaluation in soccer, and by exploiting a dataset of players' evaluations made by professional soccer scouts, we show that PlayeRank significantly outperforms the competitors. We also explore the ratings produced by {\sf PlayeRank} and discover interesting patterns about the nature of excellent performances and what distinguishes the top players from the others. At the end, we explore some applications of PlayeRank -- i.e. searching players and player versatility --- showing its flexibility and efficiency, which makes it worth to be used in the design of a scalable platform for soccer analytics

How Embodied Cognitions Affect Judgments: Height-Related Attribution Bias in Football Foul Calls

Many fouls committed in football (called soccer in some countries) are ambiguous, and there is no objective way of determining who is the “true†perpetrator or the “true†victim. Consequently, fans as well as referees often rely on a variety of decision cues when judging such foul situations. Based on embodiment research, which links perceptions of height to concepts of strength, power, and aggression, we argue that height is going to be one of the decision cues used. As a result, people are more likely to attribute a foul in an ambiguous tackle situation to the taller of two players. We find consistent support for our hypothesis, not only in field data spanning the last seven UEFA Champions League and German Bundesliga seasons, as well as the last three FIFA World Cups, but also in two experimental studies. The resulting dilemma for refereeing in practice is discussed.decision making;power;information processing;decision cue;dominance;refereeing

Actions Speak Louder Than Goals: Valuing Player Actions in Soccer

Assessing the impact of the individual actions performed by soccer players during games is a crucial aspect of the player recruitment process. Unfortunately, most traditional metrics fall short in addressing this task as they either focus on rare actions like shots and goals alone or fail to account for the context in which the actions occurred. This paper introduces (1) a new language for describing individual player actions on the pitch and (2) a framework for valuing any type of player action based on its impact on the game outcome while accounting for the context in which the action happened. By aggregating soccer players' action values, their total offensive and defensive contributions to their team can be quantified. We show how our approach considers relevant contextual information that traditional player evaluation metrics ignore and present a number of use cases related to scouting and playing style characterization in the 2016/2017 and 2017/2018 seasons in Europe's top competitions.Comment: Significant update of the paper. The same core idea, but with a clearer methodology, applied on a different data set, and more extensive experiments. 9 pages + 2 pages appendix. To be published at SIGKDD 201

Neurocognitive findings in adults who played youth football

Chronic Traumatic Encephalopathy (CTE) has been linked to contact sports, most notably boxing and American football, due to their propensity for repetitive head impacts. Concerns in the community for the safety of athletes in all contact sports has driven a significant amount of research into concussions, their long term effects, and strategies for treatment and prevention. Knowledge of long term brain health in response to neurotrauma is limited, a gap especially noticeable in the literature on non-catastrophic brain injuries sustained as a child. Concussion is a common injury that is often self-resolving with no lasting neurologic or cognitive deficits. Although repetitive brain trauma is hypothesized to be necessary and sufficient to lead to CTE, no human or animal models have definitively demonstrated the pathophysiologic connection or confirmed the mechanism of symptoms. The research to date has been case based, lacking prospective cohorts, with data complicated by convenience sampling. These factors limit the generalizability of conclusions. CTE is neuropathologically defined with variable symptoms; however, it is only diagnosable at postmortem autopsy making the etiology and prevalence difficult to understand. As more research is published to understand if there is an association between a neurocognitive degenerative disease and contact sports, the concentration is on professional athletes. Yet professional athletes do not represent the overwhelming majority of all contact sport participants. The proposed study will compare adults who participated in youth football, but not beyond the high school level, to a control group of adults who did not play contact sports. Evaluating their cognitive function with an online assessment, the Behavior Rating Inventory of Executive Function – Adult Version (BRIEF-A), data will be analyzed for signs of clinical cognitive impairment. The objective is to measure adults who represent the high percentage of youth football players who do not continue to the advanced levels. Data obtained from this study will help communities make informed decisions, and create the foundation for future studies on long term benefits and risks of contact sports for children

Take a walk on the wild side: Exploring, identifying, and developing consultancy expertise with elite performance team leaders

Objectives: Stemming from sport psychology’s recent shift to examine the effective management of elite sports team organizations, the extensive, significant, and complex challenges faced by those with responsibility for team performance have been emphasized. Recognizing that most work in this budding area has been theoretical in nature, our contribution to this special issue consequently identifies and critically evaluates some implications for excellence in practitioners who support leaders of elite sport performance teams. Method: Narrative review and commentary. Results and Conclusions: To survive and succeed, leaders of elite teams must: (a) negotiate complex and contested socio-political dynamics both within and outside their performance department; (b) make impactful and consistent real-time decisions; and (c) continually reinforce and protect their programme. To provide an optimally impactful and valued service, sport psychologists must therefore be able to advise on a broad and politically-astute leadership style and, most critically for consultancy excellence: (a) work within a professional judgment and decision making model; (b) facilitate the leader’s adaptive expertise and nested decision making; and (c) operate a proactive, forthright, and straight approach to ethical considerations. Based on these implications, we conclude by providing suggestions for the training and development of applied consultants