Miguel Montero produced one of the biggest hits of the Chicago Cubs’ championship run in the game that decided it all, and now he’s preparing again for life as a backup catcher. Montero figures to start behind the plate once or twice a week when second-year big leaguer Willson Contreras needs a break – not the veteran’s ideal role or what he envisioned when he joined the Cubs in a trade from Arizona ahead of the 2015 season.