March 6 (UPI) -- St. Louis Cardinals right-hander Trevor Rosenthal was scratched from Monday's scheduled spring training start against the Minnesota Twins with tightness in his latissimus muscle near his pitching arm.
Rosenthal felt soreness in that area following a one-inning stint against the Washington Nationals on Friday.
"He's going to need a couple days," manager Mike Matheny said of Rosenthal, who came to the majors as a starter before transitioning to the bullpen.
Rosenthal posted a 2-4 mark with 14 saves and a 4.46 ERA in 45 relief appearances last season. The 26-year-old owns an 8-20 career mark with 110 saves and a 2.92 ERA in 278 appearances with the Cardinals.