New Los Angeles Angels acquisition Shohei Ohtani has a damaged ulnar collateral ligament in his pitching elbow according to a medical report dated Nov. 28, Yahoo Sports reported on Wednesday.

According to the report, a physical performed by Dr. Masamitsu Tsuchiya at Doai Kinen Hospital in Tokyo and obtained by Yahoo Sports revealed the 23-year-old pitcher and hitter who signed with the Angels on Saturday has a first-degree sprain of his right UCL.

"While a first-degree sprain is the least severe of UCL injuries, further damage could lead to Tommy John surgery," it said.