arlington, texas >> The Texas Rangers signed Jacob deGrom to a $185 million, five-year deal in free agency last winter hoping the two-time NL Cy Young Award winner could help them get back to the playoffs for the first time since 2016 and make a push toward winning a World Series.

They also knew the risks, with the pitcher coming off two injury-plagued seasons with the New York Mets.

Even with deGrom sidelined since late April, the AL West-leading Rangers are off to the best start in franchise history — but now will be without their prized acquisition until at least next year. The team said Tuesday that deGrom will have season-ending surgery next week to repair a torn ulnar collateral ligament in his right elbow.

“We’ve got a special group here and to not be able to be out there and help them win, that stinks,” deGrom said, pausing several times with tears in his eyes. “Wanting to be out there and helping the team, it’s a disappointment.”

General manager Chris Young said Tuesday the decision on surgery came after an MRI on deGrom’s ailing right elbow, but the extent of what is required might not be determined until the operation is performed next week.

Tommy John surgery, in which the damaged ligament is replaced, is often needed to fix a torn UCL, but Young and the Rangers didn’t go as far as saying the pitcher would have that particular procedure. After being drafted by the New York Mets in 2010, deGrom made six starts in the minors that summer before needing Tommy John surgery and missing all of 2011, three years before his big league debut.

DeGrom last pitched April 28 against the New York Yankees, when he exited early because of injury concerns for the second time in a span of three starts. The announcement about surgery came a day after deGrom was transferred to the 60-day injured list.

Young said the latest MRI showed more inflammation and significant structural damage in the ligament that wasn’t there on the scan after deGrom left the game against the Yankees.

“The results of that MRI show that we have not made progress. And in fact, we’ve identified some damage to the ligament,” Young said. “It’s obviously a tough blow for Jacob, for certainly the Rangers. But we do feel this is what is right for Jacob in his career. We’re confident he’ll make a full recovery.”

Young and deGrom, who turns 35 later this month, said the goal is for the pitcher to return near the end of next season. Both said they were glad to have clarity on what was wrong with the elbow.

Texas won all six games started by deGrom (2-0), but the right-hander threw only 30 1/3 innings. He has a 2.67 ERA with 45 strikeouts and four walks. He threw 3 2/3 scoreless innings against the Yankees in his last start before leaving because of discomfort in his arm.