Illinois State (5-2, 2-1 Missouri Valley), ranked 11th in the STATS FCS Top 25, led 14-0 at halftime on two of Robinson's TDs before Western Illinois broke through with a DeShon Gavin 2-yard scoring run and trailed 14-7 heading to the fourth.
Robinson and Proctor both scored in the final period for a 28-7 lead then Connor Sampson hit George Wahee for 4 yards and a WIU touchdown with 5:57 remaining. WIU had one more possession that ended on downs at the Illinois State 45 with 2:39 to go.
Western Illinois had a significant advantage in total yards (375-279), first downs (24-15) and offensive plays (86-58) but committed five turnovers, losing three fumbles and throwing two interceptions.
The Redbirds scored on three short drives following turnovers and intercepted a pass at their own 1-yard line to thwart a drive by the Leathernecks (0-7, 0-3).
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