Bill Belichick's NFL coaching tree:
• Al Groh 9-7 (.563)
• Bill O'Brien 31-34 (.477)
• Nick Saban (.469)
• Eric Mangini 33-47 (.413)
• Josh McDaniels 11-17 (.393)
• Romeo Crennel 28-55 (.337)
• Matt Patricia 0-1

— Warren Sharp (@SharpFootball) September 11, 2018