FORT MYERS, Fla. -- Twins left-handed reliever Ryan O'Rourke was diagnosed with a strained left flexor pronator mass in his forearm near his elbow, and he will open the season on the 10-day disabled list, general manager Thad Levine said Tuesday.
O'Rourke reported discomfort after his outing on Thursday against the Cardinals, and he underwent an MRI exam that revealed the strain. But there is no ligament damage, and O'Rourke is expected to take seven to 10 days off before starting a throwing program. The DL move can be backdated to March 30, which would allow him to be activated on April 9.