SAN DIEGO — A contingent of 21 former San Diego State players attended Saturday afternoon’s game against No. 17 Utah State. They saw something rarely experienced under coaches Steve Fisher and Brian Dutcher — multiple changes to the starting lineup at midseason. But they also saw the pillars of Aztecs basketball: defense, rebounding, physicality, diving for loose balls, mental fortitude and the absolute refusal to lose back-to-back games. The 81-67 win against first-place Utah State was more than SDSU’s 33rd straight following a loss when the next game is at Viejas Arena. It narrowed the Mount…