Tampa Bay Rays left-hander Jeffrey Springs is expected to undergo season-ending Tommy John surgery Monday.

Rays manager Kevin Cash made the surgery decision official before Saturday's game against the Chicago White Sox. Springs was moved from the 15-day injured list to the 60-day IL.

Texas Rangers team physician Dr. Keith Meister, who specializes in the elbow ligament replacement procedure, will operate.

"Devastating, honestly," Springs said. "It's kind of hard to believe that my season is already over. Still, honestly, I'm trying to process it myself."

The 30-year-old Springs went 2-0 with an 0.56 ERA during the Rays' 13-0 start.

He departed after throwing two pitches in the fourth inning April 13 against the Boston Red Sox. After throwing a 79.8 mph changeup and a 83.5 mph slider, Springs looked at his left hand and elbow.

His injury was initially diagnosed as ulnar nerve inflammation before further testing revealed the issue was more serious.

"What I felt was just in the forearm, the fingers. I didn't feel anything really in the elbow, nothing popped, anything like that," Springs said. "It was just kind of a numb feeling, almost like a funny bone sensation. When I threw the pitch when they came out there, it kind of shot down the forearm, but I just thought maybe it is a nerve."

Springs went 9-5 with a 2.46 ERA in 33 games (25 starts) last season, his first in the Rays' rotation. He signed a four-year, $31 million contract in January.

The Associated Press contributed to this report.