NORTH MANKATO — When Barnum’s Ava Fetters came up to bat in the fourth inning of the Bombers’ Class A quarterfinal against West Lutheran Tuesday at Caswell Park, she thought of coach Dustin Collelo. Fetters grounded into a double play with the bases loaded to end the first inning. The Bombers had struggled at the plate and they trailed the Warriors 3-0. “We were watching a lot of strikes,” she said. “Our coach is always telling us ‘jump on the f…