The Seattle Mariners had arguably the best rotation in the major last season, but this year has been one of ups and downs for the talented pitching staff.
Last year was a truly special campaign for the Seattle Mariners rotation. It led the majors in a whole host of categories, including ERA, WHIP, opposing team batting average, and fewest walks. This season, however, things have not gone quite as well, with them ranking 15th in ERA, 10th in WHIP, tied-15th in opposing team batting average and 10th in fewest walks.