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.
South Carolina's loss to The Citadel, coupled with Georgia and Florida struggling in tight victories, was an embarrassment for the conference.
ESPN Big Ten reporter Dan Murphy breaks down the news that Michigan State QB Connor Cook will be a game-time decision for the Spartans game against Penn State.
This year, the Big 12 wound up with a brutally backloaded schedule; next season, that won't be the case.
Mississippi State vs. Ole Miss will be a backyard brawl featuring two of college football's most exciting quarterbacks.
Pro Football Hall of Famers Darrell Green, Jackie Slater and Andre Reed will be on the coaching staffs for the NFL Players Association's Collegiate Bowl.
Paul Finebaum is not impressed with how Ohio State coach Urban Meyer has handled his team this season.