Polk County scored in every inning and Alex Perry tossed a six-inning shutout as the Wolverines defeated Walkertown 13-0 in the second round of the 3A state baseball playoffs Friday in Walkertown. Polk County (17-9) advances to the third round and will travel to East Rutherford on Tuesday. The Cavaliers (20-5) defeated West Lincoln 18-1 in their second-round game. Perry was masterful in earning the win, allowing the three hits with five strikeou…