WEST LAFAYETTE, Ind.—Purdue coach Jeff Brohm already had a reputation for running trick plays—and for leading his unranked team to upsets of top-5 opponents. His Boilermakers added to that legacy on Saturday. Aidan O’Connell matched his career high by throwing three touchdown passes—including one on a reverse, flea-flicker screen pass to Jackson Anthrop—and Purdue toppled…