St. John’s baseball knocks off Walpole on senior day

DANVERS— If the St. John’s Prep Eagles needed an indication as to what they might see in the “Super 8” tournament, Walpole gave them a preview Friday at Pete Frates Diamond. In a back-and-forth clash between two of the state’s top teams, the Eagles were pushed to the brink in a 6-5 win. “Walpole’s a…