Cardinals righty Trevor Rosenthal will open the season on the DL, Jenifer Langosch of MLB.com reports on Twitter. Sam Tuivailala will take his place on the active roster.
A lat issue had slowed Rosenthal earlier in camp, but he had seemed on track to start the year back in the bullpen. Though he had been working to stretch out as a starter, the club did not seem to have a rotation spot open — and Rosenthal’s delay apparently nixed that idea.
It seems that the lat injury is to blame, Derrick Goold of the St.