Scott Diamond is expected to be called up to take Liam Hendriks' spot in the Twins' rotation.
Nick Blackburn (shoulder) still hopes to start Tuesday against the Red Sox.
Twins general manager Terry Ryan said Scott Baker (elbow) exited a minor league rehab start on Thursday because he "just didn’t feel right" and "couldn't seem to get loose."
Scott Baker (elbow) is scheduled to pitch in a minor league exhibition game Thursday.