Premier League Player Performance Metrics

2017 ◽  
pp. 130-137
Keyword(s):  
Performance Metrics ◽  
Premier League ◽  
Player Performance

scholarly journals Epidemiology and Impact on Performance of Lower Extremity Stress Injuries in Professional Basketball Players

2017 ◽  
Vol 10 (2) ◽  
pp. 169-174 ◽  
Author(s):  
Moin Khan ◽  
Kim Madden ◽  
M. Tyrrell Burrus ◽  
Joseph P. Rogowski ◽  
Jeff Stotts ◽  
...  
Keyword(s):  
Lower Extremity ◽  
Performance Metrics ◽  
Surgical Intervention ◽  
Return To Play ◽  
Basketball Players ◽  
Professional Basketball ◽  
Stress Injuries ◽  
Improved Performance ◽  
And Performance ◽  
Player Performance

Background: Professional basketball players in the National Basketball Association (NBA) subject their lower extremities to significant repetitive loading during both regular-season and off-season training. Little is known about the incidence of lower extremity bony stress injuries and their impact on return to play and performance in these athletes. Hypothesis: Stress injuries of the lower extremity will have significant impact on performance. Study Design: Case series. Level of Evidence: Level 4. Methods: All bony stress injuries from 2005 to 2015 were identified from the NBA. Number of games missed due to injury and performance statistics were collected from 2 years prior to injury to 2 years after the injury. A linear regression analysis was performed to determine the impact of injury for players who returned to sport. Results: A total of 76 lower extremity bony stress injuries involving 75 NBA players (mean age, 25.4 ± 4.1 years) were identified. Fifty-five percent (42/76) involved the foot, and most injuries occurred during the regular season (82.9%, 63/76), with half occurring within the first 6 weeks. Among players who sustained a fifth metatarsal stress fracture, 42.9% were unable to return to professional play. Players who sustained stress injuries had reduced play performance, specifically related to number of games played ( P = 0.014) and number of steals per game ( P = 0.004). Players who had surgery had significantly better performance at 2 years than those who were managed nonoperatively, independent of the type of injury (β = 4.561; 95% CI, 1.255-7.868). Conclusion: Lower extremity bony stress injuries may significantly affect both short- and long-term player performance and career length. Stress injuries result in decreased player performance, and surgical intervention results in improved performance metrics compared with those treated using conservative methods. Clinical Relevance: Stress injuries result in decreased player performance, and surgical intervention results in improved performance metrics.

scholarly journals Return to Play and Player Performance After Achilles Tendon Rupture in UEFA Professional Soccer Players: A Matched-Cohort Analysis of Players From 1999 to 2018

2021 ◽  
Vol 9 (9) ◽  
pp. 232596712110241
Author(s):  
Enrico M. Forlenza ◽  
Ophelie Z. Lavoie-Gagne ◽  
Yining Lu ◽  
Connor C. Diaz ◽  
Jorge Chahla ◽  
...  
Keyword(s):  
Achilles Tendon ◽  
Tendon Rupture ◽  
Performance Metrics ◽  
Cohort Analysis ◽  
Achilles Tendon Rupture ◽  
Return To Play ◽  
Soccer Players ◽  
Professional Soccer ◽  
The Mean ◽  
Player Performance

Background: Achilles tendon rupture (ATR) is a potentially career-ending injury in professional athletes. Limited information exists regarding return to play (RTP) in professional soccer players after this injury. Purpose: To determine the RTP rate and time in professional soccer players after ATR and to evaluate player performance relative to matched controls. Study Design: Cohort study; Level of evidence, 3. Methods: We evaluated 132 professional soccer players who suffered an ATR between 1999 and 2018. These athletes were matched 2:1 to uninjured controls by position, age, season of injury, seasons played, and height. We collected information on the date of injury, the date of RTP, and player performance metrics (minutes played, games played, goals scored, assists made, and points per game) from official team websites, public injury reports, and press releases. Changes in performance metrics for the 4 years after the season of injury were compared with metrics 1 season before injury. Univariate comparisons were performed using independent-sample, 2-group t tests and Wilcoxon rank-sum tests when normality of distributions was violated. Results: The mean age at ATR was 27.49 ± 4.06 years, and the mean time to RTP was 5.07 ± 2.61 months (18.19 ± 10.96 games). The RTP rate was 71% for the season after injury and 78% for return at any timepoint. Overall, 9% of the injured players experienced a rerupture during the study period. Compared with controls, the injured players played significantly less (-6.77 vs -1.81 games [ P < .001] and -560.17 vs -171.17 minutes [ P < .05]) and recorded fewer goals (-1.06 vs -0.29 [ P < .05]) and assists (-0.76 vs -0.02 [ P < .05]) during the season of their Achilles rupture. With the exception of midfielders, there were no significant differences in play time or performance metrics between injured and uninjured players at any postinjury timepoint. Conclusion: Soccer players who suffered an ATR had a 78% RTP rate, with a mean RTP time of 5 months. Injured players played less and demonstrated inferior performance during the season of injury. With the exception of midfielders, players displayed no significant differences in play time or performance during any of the 4 postinjury seasons.

Novel Performance Metrics to Evaluate the Duel Between a Batsman and a Bowler

2020 ◽  
Vol 45 (2) ◽  
pp. 201-211
Author(s):  
Yamini Nekkanti ◽  
Dibyojyoti Bhattacharjee
Keyword(s):  
Performance Metrics ◽  
Current System ◽  
Skill Level ◽  
Complete Picture ◽  
Premier League ◽  
Common Scale

In the current system of cricket, the most commonly used measures to evaluate players’ performance are batting and bowling averages, strike rate and economy rate. While these measures are easy to compute and understand, they fail to reflect a complete picture of the players’ performance as they do not consider the context of the match. Various factors, such as balls faced and left, wickets remaining, the skill level of the opponent, etc., are not being considered while evaluating the players’ performance. In addition, these conventional measures fail to compare a batsman’s performance against that of a bowler or vice versa. The objective of this article is to arrive at a measure that will better explain the performance of the players while incorporating some of the factors as stated above. In this article, we use strike rate for the batsman and economy rate for the bowler to arrive at a common scale for ratings. Furthermore, we use the concept of Elo ratings in order to evaluate the duel between a batsman and a bowler. Based on the developed methodology, we evaluate the duels between the players in the Indian Premier League 2018 finals.

scholarly journals Concussion and National Hockey League Player Performance: An Advanced Hockey Metrics Analysis

2019 ◽  
Vol 54 (5) ◽  
pp. 527-533 ◽  
Author(s):  
Thomas A. Buckley ◽  
Kelsey N. Bryk ◽  
Kathryn L. Van Pelt ◽  
Steven P. Broglio ◽  
Stephen A. East ◽  
...  
Keyword(s):  
Athletic Performance ◽  
Repeated Measures ◽  
Sport Participation ◽  
Performance Metrics ◽  
Time Windows ◽  
National Hockey League ◽  
Neurocognitive Performance ◽  
Dependent Variables ◽  
Seasonal Performance ◽  
Player Performance

Context Postconcussion deficits in neurocognitive performance and postural control may persist at the time of return to sport participation. How these deficits, if present, affect athletic performance is largely unknown, with prior studies showing mixed results. Objective To evaluate postconcussion National Hockey League player performance using advanced hockey metrics over short- (5 games), medium- (10 games), and long-term (remainder of the season) seasonal performance. Design Retrospective cohort study. Patients or Other Participants National Hockey League players who sustained a sport-related concussion (SRC; n = 93) and returned during the same season and players (n = 51) who missed time for non–injury-related reasons. Main Outcome Measure(s) Six performance metrics were used: (1) points per 60 minutes, (2) Corsi percentage, (3) personal Fenwick shooting percentage, (4) scoring chances per 60 minutes, (5) penalty difference, and (6) PDO (not an acronym but sometimes referred to as SVSP% [save percentage shooting percentage]). Performance was compared using 2 (group) × 2 (time) repeated-measures analyses of variance for 3 time windows: (1) ±5 games, (2) ±10 games, and (3) the remainder of the season postconcussion. Alpha values were set at a conservative .01 to account for the lack of independence among dependent variables. Results No significant interactions were present for any of the 6 dependent variables at any of the 3 time windows. Overall, none of the secondary variables differed. Conclusions Using advanced, sport-specific metrics, we found that National Hockey League players did not display worse seasonal performance during 3 postinjury time frames after they sustained an SRC. Whereas laboratory studies have identified lingering neurologic deficits after concussion, our results suggest that these deficits, if present, either do not translate to worse athletic performance or were not captured by these 44 metrics. Further, prospective efforts are needed to accurately quantify performance after SRC among professional hockey players.

scholarly journals Roster-Based Optimisation for Limited Overs Cricket

2021 ◽  
Author(s):  
◽  
Ankit Patel
Keyword(s):  
Random Forest ◽  
Performance Metrics ◽  
Positive Impact ◽  
Performance Outcomes ◽  
Rating System ◽  
World Cup ◽  
Research Hypothesis ◽  
Premier League ◽  
Individual Player ◽  
The Caribbean

<p>The objective of this research was to develop a roster-based optimisation system for limited overs cricket by deriving a meaningful, overall team rating using a combination of individual ratings from a playing eleven. The research hypothesis was that an adaptive rating system accounting for individual player abilities, outperforms systems that only consider macro variables such as home advantage, opposition strength and past team performances. The assessment of performance is observed through the prediction accuracy of future match outcomes. The expectation is that in elite sport, better teams are expected to win more often. To test the hypothesis, an adaptive rating system was developed. This framework was a combination of an optimisation system and an individual rating system. The adaptive rating system was selected due to its ability to update player and team ratings based on past performances.  A Binary Integer Programming model was the optimisation method of choice, while a modified product weighted measure (PWM) with an embedded exponentially weighted moving average (EWMA) functionality was the adopted individual rating system. The weights for this system were created using a combination of a Random Forest and Analytical Hierarchical Process. The model constraints were objectively obtained by identifying the player’s role and performance outcomes a limited over cricket team must obtain in order to increase their chances of winning. Utilising a random forest technique, it was found that players with strong scoring consistency, scoring efficiency, runs restricting abilities and wicket-taking efficiency are preferred for limited over cricket due to the positive impact those performance metrics have on a team’s chance of winning.   To define pertinent individual player ratings, performance metrics that significantly affect match outcomes were identified. Random Forests proved to be an effective means of optimal variable selection. The important performance metrics were derived in terms of contribution to winning, and were input into the modified PWM and EWMA method to generate a player rating.  The underlying framework of this system was validated by demonstrating an increase in the accuracy of predicted match outcomes compared to other established rating methods for cricket teams. Applying the Bradley-Terry method to the team ratings, generated through the adaptive system, we calculated the probability of teami beating teamj.  The adaptive rating system was applied to the Caribbean Premier League 2015 and the Cricket World Cup 2015, and the systems predictive accuracy was benchmarked against the New Zealand T.A.B (Totalisator Agency Board) and the CricHQ algorithm. The results revealed that the developed rating system outperformed the T.A.B by 9% and the commercial algorithm by 6% for the Cricket World Cup (2015), respectively, and outperformed the T.A.B and CricHQ algorithm by 25% and 12%, for the Caribbean Premier League (2015), respectively. These results demonstrate that cricket team ratings based on the aggregation of individual player ratings are superior to ratings based on summaries of team performances and match outcomes; validating the research hypothesis. The insights derived from this research also inform interested parties of the key attributes to win limited over cricket matches and can be used for team selection.</p>

scholarly journals Adductor Muscle Injuries in UEFA Soccer Athletes: A Matched-Cohort Analysis of Injury Rate, Return to Play, and Player Performance From 2000 to 2015

2021 ◽  
Vol 9 (9) ◽  
pp. 232596712110230
Author(s):  
Ophelie Lavoie-Gagne ◽  
Nabil Mehta ◽  
Sumit Patel ◽  
Matthew R. Cohn ◽  
Enrico Forlenza ◽  
...  
Keyword(s):  
Muscle Injury ◽  
Performance Metrics ◽  
Cohort Analysis ◽  
Multivariable Analysis ◽  
Injury Rate ◽  
Adductor Muscle ◽  
Return To Play ◽  
Level Of Evidence ◽  
And Performance ◽  
Player Performance

Background: The effects of adductor muscle injury on performance in soccer athletes are unknown. Purpose: To (1) determine the rate and time to return to play (RTP) after adductor muscle injury, (2) investigate the rate of reinjury after RTP, and (3) investigate any long-term effects of injury on elite soccer player performance. Study Design: Cohort study; Level of evidence, 3. Methods: Using publicly available records, athletes sustaining adductor muscle injury were identified across the 5 major European soccer leagues (English Premier League, Bundesliga, La Liga, Ligue 1, and Serie A) between 2000 and 2015. Injured athletes were matched to controls by demographic characteristics and performance metrics from 1 season before the index timepoint. Investigations included the rate of RTP, reinjuries, player characteristics associated with RTP within 2 seasons, player availability, field time, and performance metrics during the 4 seasons after injury. Results: A total of 671 players with adductor muscle injury were included. Based on time to RTP, 86% of injuries were mild to moderate (4-28 days missed), and 4% required surgical intervention. Players with adductor muscle injury were absent for a median of 22 days (range, 1-700 days) and 4 games (range, 1-76 games). A total of 521 (78%) players returned at the same level, with no demographic or clinical characteristics associated with RTP on the multivariable regression. Of those returning to play, 143 (21%) experienced adductor reinjury. After RTP, defenders demonstrated decreased field time compared with controls ( P < .05). As compared with controls, defenders and midfielders scored more points and goals per game during the season of the injury ( P < .01), while attackers recorded more goals and assists per game the season after injury ( P < .05). Conclusion: Only 3 in 4 players (78%) returned to participate in an official match, and the reinjury rate was high (21%). After RTP, defenders demonstrated decreased field time versus controls. On the other hand, defenders and midfielders recorded more points and goals per game, while attackers recorded more goals and assists per game versus controls. Although the multivariable analysis results did not identify player characteristics associated with RTP, there was a position-dependent association on player performance after RTP.

scholarly journals The impact of investors on transfer fees in the English Premier League: A study of the ownership structures

2021 ◽  
Vol 18 (3, special issue) ◽  
pp. 241-256
Author(s):  
Lukas Richau ◽  
Florian Follert ◽  
Monika Frenger ◽  
Eike Emrich
Keyword(s):  
Empirical Studies ◽  
Ownership Concentration ◽  
Foreign Investors ◽  
Premier League ◽  
European Football ◽  
Transfer Fees ◽  
Player Performance ◽  
The Impact ◽  
English Premier League ◽  
Positive Effect

Transfer fees in European football have experienced a rapid increase in the past years. Simultaneously, an increasing number of domestic and recently foreign investors — who are assumed to further increase team spending in European football — have entered the football market by becoming club owners. In light of these developments, fears associated with an increasing influence of foreign (majority) investors from the financial as well as the emotional fan perspective have increased. Given the rather limited number of empirical studies focusing on the impact of investors on transfer fees, we shed further light on this topic. Based on a data sample including transfer fees, player characteristics, player performance and team performance from 2012–2013 to 2018–2019 for the English Premier League, we estimate OLS regressions and quantile regressions to analyze the effects of ownership concentration and investor origin on the amount of individual transfer fees. While we do not find strong evidence that ownership concentration increases the willingness to pay, we find fairly consistent results that foreign investors are willing to pay a premium compared to domestic investors. Our results also indicate that especially foreign investors who own a majority share of a club have a positive effect on transfer fees for the upper quantiles.

scholarly journals Return to Play and Player Performance After Meniscal Tear Among Elite-Level European Soccer Players: A Matched Cohort Analysis of Injuries From 2006 to 2016

2022 ◽  
Vol 10 (1) ◽  
pp. 232596712110595
Author(s):  
Ophelie Z. Lavoie-Gagne ◽  
Avinaash Korrapati ◽  
Julia Retzky ◽  
David N. Bernstein ◽  
Connor C. Diaz ◽  
...  
Keyword(s):  
Surgical Management ◽  
Performance Metrics ◽  
Meniscal Tear ◽  
Cohort Analysis ◽  
Return To Play ◽  
Management Approach ◽  
Meniscal Tears ◽  
And Performance ◽  
Player Performance

Background: Meniscal injuries are extremely common in soccer athletes, and little is known about postrecovery performance. Purpose: To (1) identify characteristics associated with return to play (RTP) to the same league level and (2) evaluate long-term effects that injury and management approach may have on player performance. Study Design: Cohort study; Level of evidence, 3. Methods: Using publicly available records, we identified athletes who sustained meniscal tears across the 5 major European soccer leagues (English Premier League, Bundesliga, La Liga, Ligue 1, and Serie A) between 2006 and 2016. Injured athletes were matched to controls 1:2 by demographics and performance. Investigations included rate of RTP to the same league level, reinjury, player characteristics associated with RTP within 2 seasons, long-term availability, field time, and performance metrics standardized to 90 minutes of play during the next 4 seasons. Results: A total of 250 players sustaining meniscal tears were included, of which 106 (42%) received surgical management. Median absence was 57.5 days (interquartile range [IQR], 35-92) or 7 games (IQR, 4-12). Rate of RTP was 70%, and the reinjury rate 5% if a player could RTP. Age greater than 30 years was a negative predictor for RTP (odds ratio [OR], 0.62; P = .002), whereas higher preinjury goals per game (OR, 2.80; P = .04) and surgical management (OR, 1.38; P = .002) were positive predictors for RTP. Surgical management was associated with higher long-term availability ( P < .01). As compared with the control, there were no significant differences in field time or performance metrics after RTP, either overall or by player position. As compared with nonoperative management, defenders undergoing surgery demonstrated decreased field time. Attackers and midfielders demonstrated similar field time and performance regardless of management. Conclusion: RTP of elite soccer athletes sustaining meniscal tear is contingent on age, preinjury performance, and management approach. Those who RTP to the same league level can be expected to demonstrate equivalent field time, performance, and long-term availability as noninjured athletes.

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