Idaho (0-4) had tied the game on the final play of regulation, when Dominique Blackman tossed an 8-yard TD pass to Mike Scott in the corner of the end zone. Trey Farquahar's extra point made it 34-all.
Farquahar's 49-yard field goal put the Vandals ahead in overtime, but Smith and Claiborne pulled it out for the Cowboys (1-3).
Smith was 23 of 35 for 365 yards and was not intercepted, and Chris McNeill caught eight passes for 219 yards. Blackman finished 34 of 46 for 306 yards and had three touchdowns and no interceptions.
Auburn defensive back Tim Irvin, the nephew of Pro Football Hall of Famer Michael Irvin, announced via Twitter on Tuesday that he is transferring to another school.
Michigan running back Drake Johnson was run over in April by a forklift at the Wolverines' indoor track building, according to reports.
In an attempt to solve its #Pac12AfterDark problem, the league is seeking to reduce the number of late games on the Pac-12 Networks.
Recruiting reporter Derek Tyson joins ESPN's Phil Murphy to break down the incoming freshmen likeliest to make a splash in 2016.
Washington has named Jennifer Cohen as its new athletic director after she served as the interim athletic director following Scott Woodward's departure for Texas A&M.
Duke coach David Cutcliffe set the bar high when he sprung some exciting news on walk-on defensive end Danny Doyle.