The ligament in question is the object of the common Tommy John surgery.
The outcome of testing by Dr. Neal ElAttrache in Los Angeles has not yet been shared.
"We're still working through the process, trying to get with Dr. ElAttrache to confirm everything and finalize our plan of treatment," assistant general manager Kyle Stark said.
Tom Singer is a reporter for MLB.com and writes an MLBlog Change for a Nickel. He can also be found on Twitter @Tom_Singer. This story was not subject to the approval of Major League Baseball or its clubs.