The Cubs are considering having left-handers Brett Anderson and Mike Montgomery share the fifth spot in their rotation because they “have not been satisfactorily stretched out,” manager Joe Maddon told Carrie Muskat of MLB.com on Saturday. Injury issues have long beset Anderson, who only notched 11 1/3 innings as a member of the Dodgers last season, while Montgomery has only gone past the 150-frame plateau twice in a professional season. Montgomery last accomplished that in 2015, when the then-Mariner split his season between the Triple-A level and the majors.