The Tigers (1-2) stopped Kolton Browning and the Warhawks to start overtime, and Justin Manton's 37-yard field goal fell short. Then Tre Mason rushed for 10 yards, and Kiehl Frazier downed the ball on the next play to set up Parkey's winning kick.
The Warhawks (1-1) rallied from 28-7 down to shock Arkansas in overtime a week ago, a rare victory against the SEC. This one wouldn't have been that much of a shocker against struggling Auburn, which led 28-14 midway through the fourth quarter.
Onterio McCalebb rushed for 128 yards and a touchdown for the Tigers. Kiehl Frazier threw one touchdown pass and caught another, both 33 yards.
Browning went 28 of 46 passing for 237 yards and three touchdowns.