According to Bill Shaikin of the Los Angeles Times, the Dodgers have decided to placed their ace Clayton Kershaw on the disabled list because of a niggling back injury.
Mattingly on decision to put Kershaw on DL: "We're going to protect him from him." #dodgers
— Bill Shaikin (@BillShaikin) March 29, 2014
The Dodgers have invested a LOT of money in Clayton Kershaw so it makes sense that they would take extra precautions when dealing with him. Losing him for an extended period of time would serve as a gut punch to their World Series aspirations.