AbstractGet full access to this articleView all access options for this article.Get accessReferences1. White P. Persad S. and Gee C. , The Effect of Mid-Season Turnover on Team Performance: The Case of the National Hockey League (1989–2003), International Journal of Sports Science and Coaching, 2007, 2(2), 143–152.2.The Official Website of the Premier League, http://www.premierleague.com.3.The Official Site of Major League Baseball, http://mlb.com.4.The Official Site of the National Basketball Association, http://nba.com.5.Official Site of the National Football League, http://nfl.com.