By: TONY MARKS Editor Former LSU slugger and centerfielder Dylan Crews hit his first grand slam of his professional career on Tuesday, August 8, in his fourth game with the Fredericksburg Nationals. The four-run blast came in the bottom of the seventh inning of an 11-2 win over the Lynchburg Hillcats. “He’s one of the best hitters on the planet,” Fredericksburg manager Jake Lowery said. “He…