As a byproduct of all that success, hiring one of Belichick’s understudies has been tried by many teams hoping to replicate The Patriot Way. But history has shown that poaching from Belichick’s coaching tree doesn’t guarantee a franchise transformation considering Houston Texans coach Bill O’Brien is Belichick’s most successful former Patriots understudy, and it’s not like O’Brien’s 42-38 record as an NFL coach has blown anyone away.