Book excerpt: In today's NFL, the high level of competition creates constant changes in players, coaches, and strategies. In order to remain competitive, teams must learn how to quickly adapt to new situations, find innovative ways to gain an advantage, and teach their players to execute the strategies on the field. No other coach in professional sports who has been able to do that more than New England Patriots Head Coach Bill Belichick. In Strategy Concepts of Bill Belichick, we analyze the methods, mindsets and strategies that helped Bill Belichick win 4 Super Bowls. This brief Leadership Case Study examines how Bill Belichick is able to constantly achieve success in a competitive industry. Here are some of the key takeaways you will receive after reading this brief, easy-to-read case study on Bill Belichick and the New England Patriots:-Learn how Belichick creates a culture of accountability.-How individual performance raises the performance of the team.-How good decisions can sometimes have bad outcomes.-Why it's important to have a strong foundation.-Why constant learning and adapting is necessary for success.This case study is not simply a football book. Although football coaches and executives can apply these lessons, any team, business, or company can apply these strategies to achieve a higher performance. Managers, teachers, coaches and students will all benefit from learning these tips.