The Seattle Mariners will use a six-man starting rotation to begin the delayed 2020 season at the end of July. Some starters will get piggy-backed. Marco Gonzales is expected to be the team's Opening Day arm, followed by the likes of Yusei Kikuchi, Justus Sheffield, Kendall Graveman and Taijuan Walker. Justin Dunn, Nestor Cortes and Wei-Yin Chen could be used as openers or to piggy back pitchers like Sheffield, Graveman and Walker. Walker, in particular, could have many of his starts shortened ...