HIGHLANDS RANCH — For two of the leading passers in the state to do battle in the opening week of the season, it quickly turned into a defensive duel. The two quarterbacks, Logan Madden of No. 4’s Ralston Valley, and Mountain Vista’s Austyn Modrzewski, who combined for over 5,000 yards last season, were stymied in a Week Zero showdown as the teams had four turnovers on Friday night.