ARLINGTON, Texas _ Before playing their first game of their second road trip, the Los Angeles Angels suffered a loss when JC Ramirez's 2018 season came to an end.
After the right-hander was diagnosed with a torn ulnar collateral ligament in the elbow of his throwing arm, doctors recommended he undergo reconstructive surgery.
Ramirez was pulled after struggling through two innings Saturday in a loss to Oakland.
"It's a shame," manager Mike Scioscia said. "It definitely knocks the wind out of you when you see a guy who's worked as hard as he has."
Ramirez, 29, was converted into a starter a year ago and had a record of 11-10 in 147 1/3 innings.
He didn't pitch after Aug. 19 because of discomfort that originally was described as forearm irritation. Ramirez eventually was diagnosed with a partial UCL tear and treated with a stem-cell injection.
He pitched through spring training and one regular-season start, reporting no issues until feeling tightness in his forearm while warming up Saturday.
Ramirez became the third Angels starter placed on the disabled list, joining Andrew Heaney and Matt Shoemaker.
Heaney (elbow inflammation) is expected to make his season debut later this week in Kansas City.
Shoemaker (forearm strain) was scheduled to undergo an electromyography and nerve condition study Monday. His status is pending on the results.
With the rotation in need of aid, rookie Jaime Barria will make his big-league debut Wednesday against Texas. The 21-year-old right-hander was with the Angels during much of spring training.
"You saw the talent," Scioscia said. "You saw him improving. We have every confidence that he'll make the pitches to give us a chance to win."