What football's losing with the departure of three legendary coaches

What's happening: Belichick is out as the head coach of the New England Patriots after 24 seasons — and one of the most successful dynasties in history, Axios Boston's Mike Deehan writes.

• Alabama's Nick Saban, perhaps the best college coach ever, retired yesterday. He won seven national championships in his 28-year coaching career — six with the Crimson Tide and one at LSU.
• Seattle Seahawks head coach Pete Carroll — one of just three head coaches to win a college national championship (at USC) and a Super Bowl ring — was unexpectedly canned.

🔎 Zoom in: Between the three coaches, there are 17 combined national championships and Super Bowl wins. True to their identity as legends, each had a mystique that went beyond football tactics and strategy.

• Belichick's mien evoked a grumpy lobster boat captain, "grimacing on the New England sideline like he's miles from shore in a storm," Wall Street Journal columnist Jason Gay writes.

• Saban stoically built Alabama into a team that was feared. Everyone else in the sport grew tired of his winning ways.
• Carroll — at least in football terms — was something of a hippy. He talked about leading teams in a "loving, compassionate, empathetic way."

Between the lines: Belichick, 71, wants to remain an NFL head coach and will likely look for another job, ESPN reports. Carroll will remain with the Seahawks as an adviser.