Bruce Arians experienced downside of new overtime rule, which he suggested

Bruce Arians walked off with a sense of relief after the Cardinals pulled off a late overtime victory. Joe Camporeale/USA TODAY Sports

TEMPE, Ariz. -- Bruce Arians got what he wanted Sunday afternoon.

Reducing overtime to 10 minutes from 15 was his idea at the NFL's annual meetings in March. It was a product of experience. The Arizona Cardinals tied the Seahawks 6-6 last October in a Sunday night game that exhausted the entire 15-minute overtime period. He felt the Cardinals were sluggish and tired the next week because of the extra full period, which led to a loss at Carolina.

Arians almost got burned by his own proposal Sunday. The San Francisco 49ers ate 7:36 off the clock in overtime before kicking a field goal to go up 15-12. Arizona took over with 2:24 left and was able to orchestrate a seven-play drive that covered 75 yards in 1:52 and ended with Carson Palmer hitting Larry Fitzgerald for a 19-yard touchdown pass to win the game.

"I was kicking my ass for bringing up this 10-minute overtime rule," Arians said. "But [it] worked out pretty good."

Even though the Cardinals were pushed to the brink of a loss because of the time constraints, Arians is still in favor of the new overtime rule.

"I think it was one of the other overtime games this year and those guys had to play Thursday night," Arians said. "That's hard on you. That's really hard."

With less than 150 seconds left in the game, Arians had to change the game plan.

"We had some things we thought of running wise and in play-action," Arians said. "It all went out the window. We did a great job of defending every blade of grass but took way too much time off the clock. We had them stopped, then miss a tackle and obviously the two penalties, or we get the ball and a field goal wins the game. That's a whole different ballgame with probably four or five minutes.

"But when you get it at 2:30 you're straight into two-minute offense, and sometimes that's the best way we've played this year."

If Palmer's pass to Fitzgerald had fallen incomplete on second down, Arians would've tried for a touchdown on third down and then played for the tie on fourth down.

"You have to," Arians said. "You've got to take the tie. You can't take the loss. There's just no way you're going to take a loss."