San Diego manager Bud Black said the MRI revealed Young has a strain -- which is exactly what the original diagnosis was.
Black said that Young -- on the disabled list since April 7 -- won't be evaluated again for another two to three weeks.
"In the meantime, he will work with the training staff on scapular stabilization exercises and rehab rehabilitation modalities to help strengthen the shoulder," Black said.
Black said he's hopeful that Young will be able to pitch again this season, and that rest and rehabilitation will heal the shoulder.
On Monday, Young had an MRI with contrast to enhance the scan. The MRI was sent to noted orthopedic surgeon James Andrews for evaluation.
Young then had a traditional MRI on Friday.
Earlier in the week, Young -- who tossed six scoreless innings in Arizona in his lone start of the season -- expressed his frustration with his shoulder.
"I want answers," he said. "I had this cleaned up last August. Why am I having trouble now? It's extremely frustrating."
Young had his 2009 season cut short because of arthroscopic debridement surgery that removed loose fragments in his shoulder last August.
Young's rehabilitation program, by his own admission, was smooth and without setback, including his time in Spring Training.