Chattanooga trailed 28-21 in overtime when Tyrell Price scored on a 5-yard run. On the conversion, the Mocs (2-0) went for two with Nunnelly taking the hand-off on a reverse play and throwing to a wide open Giberti in the endzone for the win.
Nick Tiano threw for 347 yards and two scores, both going to Nunnelly, who finished with 268 yards on 10 catches. Price ran for a pair of touchdowns.
Chattanooga had a chance to win it in regulation but Victor Ulmo missed a 34-yard field goal as time expired, sending the game into overtime tied at 21-all.
The Mocs led 21-14 at halftime but went scoreless in the second half.
Jordan Black threw for 90 yards and a touchdown and ran for two more scores for the Bulldogs (0-2).
Early celebration costs New Mexico a TD
New Mexico RB Bryson Carroll has a clear path to the end zone, but drops the ball at the one-yard line to negate the potential touchdown.
Canes strike first on Perry's TD to Dallas
Miami jumps out on top against Virginia on N'Kosi Perry's touchdown flip to DeeJay Dallas for the 17-yard score.
Head coaches busier than ever
Georgia head coach Kirby Smart joins Paul Finebaum to discuss the sacrifices made by coaches.
Washington St.-Arizona St. Preview
Arizona State had a week off to recover from injuries, refocus for the rest of the season and get ready for the next opponent.
Pollack: Bama's defense isn't championship worthy
David Pollack details the weaknesses of Alabama's defense and how it could potentially hurt them in the championship hunt.
Pollack: Trask must trust his defense vs. LSU
Maria Taylor, Desmond Howard and David Pollack evaluate the keys for Kyle Trask to lead Florida to victory against LSU.