With an RBI single in the bottom of the seventh inning, Jhalan Jackson broke up a 4-4 tie to lift the Charleston RiverDogs over the Augusta GreenJackets in walk-off fashion on Saturday night in front of a crowd of 4,979 at Riley Park. The base hit gave the RiverDogs a 5-4 win and a sweep of the evening’s doubleheader after playing out the...