Robinson quarterback Blake Rice wrapped up a win over King on a 4-yard touchdown run in overtime.
The Knights (2-0) scored on their opening possession as Tim Randolph capped a long drive with a 4-yard touchdown run.
King responded early in the second quarter. Robinson's Marqus Baker fumbled and Reese Sturgis returned it 28 yards for a touchdown.
Frankie Willliams returned the ensuing kickoff 80 yards for a score. The Lions (1-1) trailed 14-6 at halftime.
With six seconds remaining in regulation and the scored tied at 24, Robinson missed a field goal and sent the game into overtime.
The Lions failed to convert on their opening possession of the first overtime, missing a field goal. Robinson then needed only three plays before Rice scored and sealed the win.