More than ever, NFL owners are long on expectations and short on patience with new coaches.
And can you blame them?
Consider the success last year's new coaches had, with Philadelphia's Chip Kelly, Kansas City's Andy Reid and San Diego's Mike McCoy directing their teams back to the playoffs, Arizona's Bruce Arians guiding the Cardinals to 10 victories, and Chicago finishing a half-game out of first place in the NFC North under Marc Trestman, albeit winning two fewer games than the year before.
If head coaches aren't quick-fix artists, it's three years and a cloud of pink slips.
"The nature of the league now, with free agency and the draft, you can turn...