Boise State quarterback Brett Rypien warms up before an NCAA college football game against Air Force, Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

Boise State head coach Bryan Harsin throws passes to receivers along with quarterback Brett Rypien, back, before the first half of an NCAA college football game against Air Force Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

Boise State wide receiver Sean Modster warms up before an NCAA college football game against Air Force, Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

Boise State quarterback Brett Rypien, right, congratulates wide receiver John Hightower after Hightower's pass catch for a touchdown against Air Force in the first half of an NCAA college football game Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

Air Force linebacker Blake Dailey, left, knocks Boise State running back Robert Mahone out of play after Mahone pulled in a pass in the first half of an NCAA college football game Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

Boise State cornerback Tyler Horton, right, tackles Air Force fullback Cole Fagan after a short gain in the first half of an NCAA college football game Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

Air Force quarterback Isaiah Sanders (4) is tackled after a short gain by Boise State safety Tyreque Jones, left, and linebacker Tyson Maeva in the first half of an NCAA college football game Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

Boise State head coach Bryan Harsin directs his team against Air Force in the first half of an NCAA college football game Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

Boise State wide receiver John Hightower pulls in a pass for a touchdown against Air Force in the first half of an NCAA college football game Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

Air Force head coach Troy Calhoun looks on in the first half of an NCAA college football game against Boise State, Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

Air Force defensive back Milton Bugg III, left, drags down Boise State wide receiver John Hightower after he pulled in a pass in the first half of an NCAA college football game Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

Boise State wide receiver John Hightower (16) rolls in for a touchdown after pulling in a pass in front of Air Force linebacker Grant Donaldson in the first half of an NCAA college football game Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

Boise State wide receiver A.J. Richardson, right, runs into a photographer after scoring a touchdown against Air Force in the first half of an NCAA college football game Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

Boise State offensive lineman Ezra Cleveland carries out a United States flag as the team takes the field to face Air Force in an NCAA college football game Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

Air Force defensive back Ross Connors, left, pulls down Boise State wide receiver Sean Modster in the first half of an NCAA college football game Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

Boise State wide receiver John Hightower, left, is tackled by Air Force defensive back Ross Connors after pulling in a pass in the second half of an NCAA college football game Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

Boise State running back Alexander Mattison heads to the bench after scoring a touchdown against Air Force in the second half of an NCAA college football game Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

Air Force defensive tackle Jordan Jackson, left, comes in to tackle Boise State running back Alexander Mattison after a short gain in the second half of an NCAA college football game Saturday, Oct. 27, 2018, at Air Force Academy, Colo. Boise State won 48-38. (AP Photo/David Zalubowski)

Air Force quarterback Isaiah Sanders runs for a short gain as Boise State defensive end Kayode Rufai pursues in the second half of an NCAA college football game Saturday, Oct. 27, 2018, at Air Force Academy, Colo. Boise State won 48-38. (AP Photo/David Zalubowski)

Boise State cornerback Tyler Horton celebrates after tackling Air Force fullback Cole Fagan short of a first down in the second half of an NCAA college football game Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

Air Force head coach Troy Calhoun disputes a call in the second half of an NCAA college football game against Boise State, Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

Boise State linebacker Riley Whimpey, right, sacks Air Force quarterback Isaiah Sanders in the second half of an NCAA college football game Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

Boise State Broncos linebacker Riley Whimpey, left, celebrates his sack with linebacker Jabril Frazier in the second half of an NCAA college football game against Air Force, Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

Fans congratulates Boise State quarterback Brett Rypien (4) after an NCAA college football game against Air Force, Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

Boise State head coach Bryan Harsin checks over his play sheet in the second half of an NCAA college football game against Air Force, Saturday, Oct. 27, 2018, at Air Force Academy, Colo. Boise State won 48-38. (AP Photo/David Zalubowski)

Fans congratulates Boise State Broncos wide receiver John Hightower (16) after an NCAA college football game against Air Force, Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

Air Force fullback Cole Fagan, right, is tackled after a short gain by, form left, Boise State linebacker Riley Whimpey, cornerback Tyler Horton and safety Tyreque Jones in the second half of an NCAA college football game Saturday, Oct. 27, 2018, at Air Force Academy, Colo. Boise State won 48-38. (AP Photo/David Zalubowski)

Boise State quarterback Brett Rypien prepares to throw a pass in the first half of an NCAA college football game against Air Force, Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

Boise State quarterback Brett Rypien, front left, gestures to the bench as running back Alexander Mattison waits for the call of a play in the huddle in the second half of an NCAA college football game against Air Force, Saturday, Oct. 27, 2018, at Air Force Academy, Colo. (AP Photo/David Zalubowski)

FILE - In this Saturday, Oct. 27, 2018, file photograph, Boise State head coach Bryan Harsin throws passes to receivers in front of quarterback Brett Rypien before an NCAA college football game against Air Force at Air Force Academy, Colo. This season, the Broncos don’t have reliable quarterback Brett Rypien. He’s with another rendition of the Broncos after signing as an undrafted free agent with Denver. For a change, coach Bryan Harsin is breaking in a new QB. (AP Photo/David Zalubowski, File)

FILE - In this Saturday, Oct. 27, 2018, file photo, Air Force quarterback Isaiah Sanders runs for a short gain as Boise State defensive end Kayode Rufai pursues in the second half of an NCAA college football game at Air Force Academy, Colo. Air Force returns seven players on defense and seven more on offense. They certainly have experience at quarterback after Donald Hammond III and Isaiah Sanders split time last season. (AP Photo/David Zalubowski, File)