Southern (1-2, 1-1) took the early lead when Jaleel Richardson returned the opening kickoff 86 yards for a touchdown.
Joseph then connected on two touchdown passes, 25 yards to Michael Berry and 4 yards to Tomas Jackson, giving Southern a 21-0 halftime lead. Berry finished with 117 yards and two scores on five carries.
After a 60-yard touchdown pass from Joseph to Berry extended the Jaguars’ lead to 28-0 entering the fourth quarter, McDonald connected with Rico Richardson for the Tigers’ first points of the game.
McDonald led two more Tigers scoring drives late in the fourth, but it was not enough.