JACKSONVILLE, Fla. —Ryan Roberson hit a walk-off single in the 11th inning to lift the North Florida Ospreys to a 5-4 win over the Georgia Southern Eagles at Harmon Stadium Tuesday. Georgia Southern (23-21) held a 4-2 lead after seven innings before a pair of runs scored on an error by first baseman T.D. Davis. Davis had trouble fielding a high hop that bounced off his chest and into foul territory down the right field line.