Chris Sale isn't expected to undergo Tommy John surgery, according to a source.

Sale's elbow is still a concern and it remains to be seen how long he'll be sidelined.

The left-hander's five-year, $145 million extension with the Boston Red Sox starts this season.

Elbow inflammation forced Sale to be shut down in August.

Ron Roenicke stressed that the Red Sox needed "to get this right" before determining how to proceed with Sale.