- Peter Keating
Every year, across all sports, a handful of coaching changes seems to trigger sudden, sharp team turnarounds. Fans inevitably react to these reversals of fortune by crediting the new guy's discipline and smarts ("Jason Garrett really brings out the best in the Cowboys ") while questioning athletes' commitment and heart under the old guy ("But man, the team must really have been mailing it in for Wade Phillips").
When new coaches have success, they usually don't deserve all the credit thanks to a statistical law of gravity called "regressions to the mean." So fans shouldn't fall in love with the new clipboard holder until they see what he does over time.