Manager Don Mattingly said Kershaw remains under orders to hold back on velocity and is monitored by trainers using an app that calculates pitch speed.
"They only allow him to throw so hard," said Mattingly. "Stan [Conte, trainer] has been educating me about the velocity injury. He has to keep it below that so he won't injure it."
No timetable has been placed on Kershaw's return. He has been tossing nearly daily since suffering the injury to retain as much arm strength as possible, but he will require a rehab assignment once he is game-ready.
The teres major muscle, which stabilizes the upper arm to the upper back near the armpit, is a key muscle for acceleration of the arm and resulting pitch velocity.