Joel Hanrahan, RP, Boston Red Sox: Hanrahan was placed on the disabled list Tuesday (retroactive to Sunday, April 14) due to persistent right hamstring soreness, which manager John Farrell said was affecting his leg lift and, consequently, his mechanics, according to ESPNBoston.com. As a right-handed thrower, Hanrahan needs the power and control from the back (stance) leg to effectively deliver the ball. Any pain or weakness in the leg can affect command by destabilizing the entire core, which could explain Hanrahan's struggles of late. It turns out the hamstring has been bothering him since early April, and beyond being ineffective, the larger concern could be that efforts by Hanrahan to compensate might result in an injury to his throwing arm.
The decision to provide some extended rest now to help prevent a more significant hamstring strain or other, more problematic injury later is a good one. Farrell told reporters Tuesday that Hanrahan "needs five to seven days to have the hamstring discomfort subside," at which point a throwing program could be initiated if all goes to plan. As to whether Hanrahan comes off the DL when eligible, that will largely be determined by whether he is able to resume throwing in another week. Until then, it will be rest, treatment and Andrew Bailey in the closer role.