San Diego St. leans on D in upset against Boise State, 19-13

Boise State quarterback Brett Rypien (4) looks downfield in the first half of an NCAA college football game against San Diego State, Saturday, Oct. 6, 2018, in Boise, Idaho.(AP Photo/Steve Conner)

Boise State running back Alexander Mattison (22) runs with the ball against San Diego State in the first half of an NCAA college football game, Saturday, Oct. 6, 2018, in Boise, Idaho. (AP Photo/Steve Conner)

Boise State defensive tackle Chase Hatada (93) knocks the ball loose from San Diego State wide receiver BJ Busbee, left, in the first half of an NCAA college football game, Saturday, Oct. 6, 2018, in Boise, Idaho. Boise State recovered the fumble. (AP Photo/Steve Conner)

Boise State tight end Chase Blakley, left, is tackled after a reception by a San Diego State defender in the first half of an NCAA college football game, Saturday, Oct. 6, 2018, in Boise, Idaho. (AP Photo/Steve Conner)

San Diego State wide receiver BJ Busbee, in the air, avoids the tackle attempt by Boise State safety Tyreque Jones, on the ground, in the first half of an NCAA college football game, Saturday, Oct. 6, 2018, in Boise, Idaho. (AP Photo/Steve Conner)

Boise State defensive tackle Chase Hatada (93) knocks the ball loose from San Diego State wide receiver BJ Busbee, left, in the first half of an NCAA college football game, Saturday, Oct. 6, 2018, in Boise, Idaho. Boise State recovered the fumble. (AP Photo/Steve Conner)

San Diego State wide receiver BJ Busbee, left, avoids the tackle attempt by Boise State safety Tyreque Jones, on the ground, in the first half of an NCAA college football game, Saturday, Oct. 6, 2018, in Boise, Idaho. (AP Photo/Steve Conner)

San Diego State wide receiver Fred Trevillion, right, stiff arms Boise State linebacker Curtis Weaver, left, after a reception in the first half of an NCAA college football game, Saturday, Oct. 6, 2018, in Boise, Idaho. (AP Photo/Steve Conner)

San Diego State wide receiver Fred Trevillion, right, turns up field after a reception as Boise State linebacker Curtis Weaver, left, gives chase in the first half of an NCAA college football game, Saturday, Oct. 6, 2018, in Boise, Idaho. (AP Photo/Steve Conner)

Boise State quarterback Brett Rypien (4) looks to pass the ball against San Diego State in the first half of an NCAA college football game, Saturday, Oct. 6, 2018, in Boise, Idaho. (AP Photo/Steve Conner)

San Diego State safety Tariq Thompson, right, comes up with the ball after intercepting a Boise State pass in the first half of an NCAA college football game, Saturday, Oct. 6, 2018, in Boise, Idaho. (AP Photo/Steve Conner)

Boise State quarterback Brett Rypien (4) looks to pass the ball against San Diego State in the first half of an NCAA college football game, Saturday, Oct. 6, 2018, in Boise, Idaho. (AP Photo/Steve Conner)

San Diego State quarterback Ryan Agnew (9) scrambles as away from the Boise State defense in the first half of an NCAA college football game, Saturday, Oct. 6, 2018, in Boise, Idaho. (AP Photo/Steve Conner)

San Diego State wide receiver Fred Trevillion (7) tries to separate from Boise State safety Kekoa Nawahine (10) after a reception in the first half of an NCAA college football game, Saturday, Oct. 6, 2018, in Boise, Idaho. (AP Photo/Steve Conner)

San Diego State running back Chase Jasmin (22) is tripped up by Boise State safety Kekoa Nawahine (10) in the first half of an NCAA college football game, Saturday, Oct. 6, 2018, in Boise, Idaho. (AP Photo/Steve Conner)

Boise State quarterback Brett Rypien (4) looks down field as he comes under pressure from the San Diego State defense in the first half of an NCAA college football game, Saturday, Oct. 6, 2018, in Boise, Idaho. (AP Photo/Steve Conner)

Boise State running back Alexander Mattison (22) dives into the endzone for a touchdown during an NCAA college football game San Diego State, Saturday, Oct. 6, 2018 at Albertsons Stadium in Boise, Idaho. (Darin Oswald/Idaho Statesman via AP)

San Diego State quarterback Ryan Agnew (9) runs from a tackle attempt by Boise State nose tackle Matt Locher (54) in the first half of an NCAA college football game, Saturday, Oct. 6, 2018, in Boise, Idaho. (AP Photo/Steve Conner)