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Players genuinely like Crennel.
Honestly, if somebody disliked him after listening to an interview, they should be surrounded by padded walls.
Following Kansas City's domination of the previously undefeated Green Bay Packers, All-Pro defensive end Tamba Hali told the Kansas City Star:
He treats us like men. He does expect a lot from us, but he knows what it takes to work this business, and how the body feels, and we’re people, too. He’s one of those coaches who has been a coach in this league. He has five Super Bowl [championships]. With that type of résumé, you want someone around who can help us get to the top. (National Football Post)
Previous head coach, Todd Haley (who oversaw 13 total games last season), was renowned as an extremely temperamental figure—just ask Matt Cassel.
An abundance of professional athletes have fragile psyches that are a stone's throw away from shattering.
However, that stone can evolve into a boulder that burdens team chemistry if it's cast. Crennel understands this, and he walks the tightrope separating discipline and confrontation.