Sep. 12—Two of the state’s perennial powers in boys tennis squared off on Wednesday night in Zionsville — and the match-up didn’t disappoint. Fifth-ranked Zionsville out-lasted second-ranked Carmel 3-2 in a thriller, in what could be a precursor to a meeting later this year in the sectional. “That was a battle,” Zionsville head coach Earl Allen said. “At the beginning of the year, you know …