It's no secret Mike Zimmer didn't care for Kirk Cousins, and vice versa. One of the prominent head-butting moments that acerbated their rocky relationship came behind the scenes last Halloween night.
The Vikings were at home playing the Dallas Cowboys, who return to U.S. Bank Stadium on Sunday.
The Cowboys last year were without quarterback Dak Prescott. That meant then-little known backup Cooper Rush would be making his NFL starting debut.
The Vikings were 3-3, riding a two-game winning streak, coming off a bye and favored to win.
They lost 20-16, the fourth of their eight one-score losses a year ago.
Zimmer's defense would take the brunt of the blame. It allowed Rush to throw for 325 yards and two touchdowns, including the game-winner to cap a 75-yard drive with 51 seconds left.
Zimmer, the former Cowboys assistant whose emotional ties to Dallas and owner Jerry Jones never faded, was upset that his defense had been upstaged by his former boss and a no-name quarterback. But a good chunk of Zim's ire was directed at Cousins for playing too conservatively, for not taking his shots down the field, and then asserting to Zimmer after the game his belief the Vikings would beat the Cowboys without Prescott if Cousins simply avoided turnovers.
The Vikings didn't turn the ball over. The Cowboys turned it over twice, but the Vikings responded each time by going three-and-out while possessing the ball for only 1:36. Zim wasn't happy.