Stan Gilliland / AP

ACC technical advisor Ralph Picket, right, works with Duke replay technician Scott Moore while testing the conference's new instant replay system during a recent Blue Devils scrimmage.

The Mountain West is the one conference letting coaches have a say on what gets reviewed.

The MWC’s replay system allows for one challenge for each coach per half. If the play is overturned, the coach gets a second challenge for that half — if not, a timeout is taken away. Coaches must have a timeout to challenge and cannot have more than two challenges per half.

“I think it’s going to be less intrusive, less visible element than people might think,” said MWC deputy commissioner Bret Gilliland, who added that the leagues coaches approved using the challenge.

Otherwise, the MWC’s system is basically the same as the Big Ten’s.

In other conferences, coaches won’t be completely without recourse if a bad call goes against them.

“As I have told the coaches as I go around, they can encourage us by taking a time out and turning and staring at the replay booth, and that might prompt us a little bit into action to take it a little bit farther,” said Bobby Gaston, SEC coordinator of officials.

Conference USA decided to style its replay system after what the NFL does in the last two minutes of games. A technical adviser in the press box will decide which plays to review, but the referee will use an on-field monitor to review the play and make a decision.

The Big 12 will also use an on-field monitor to allow the referee to assist in the review when necessary.

A general concern about using replay is that it will lead to officials becoming passive, knowing a call can be overturned.

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“I want them to continue officiating because we want as few stoppages as we can get,” Gaston said. “So we’re going to encourage them to see it, know it, and throw it.”

From Parry’s point of view, the greatest benefit of replay was the calming affect it had on the coaches, players and fans.

“They were not so fast to scream at refs of the field because they knew if a play was called wrong, it would get corrected upstairs,” Parry said.

It also left officials feeling less stressed.

“They could leave the stadium Saturday night knowing the play was called correctly,” he said.

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