WASHINGTON -- Nationals right-hander Josiah Gray will have season-ending surgery for a partial tear of the ulnar collateral ligament in his pitching elbow, the team announced Friday.

It won't be clear until Dr. Keith Meister operates on the elbow Wednesday in Texas whether Gray's injury will require an internal brace or Tommy John ligament-replacement surgery. The latter procedure could sideline him well into next season.

The 26-year-old Gray was Washington's Opening Day starter but made only two starts this season before being shut down with a sore elbow and forearm. He tried to rehabilitate the injury but felt fatigued during his last minor league rehab start June 30 and had an MRI over the All-Star break.

Now, he won't pitch again until 2025.

"It's a setback. We can all admit that," Gray said. "But it is something, you know, you can grow from, you can learn from and come back better. And in talking with all my friends around baseball, I've been able to just understand that it is, you know, just a blip on the radar.

"It's not going to be the end of my story."

Gray was a prized acquisition for the Nationals in the July 2021 trade that sent Max Scherzer and Trea Turner to the Los Angeles Dodgers as Washington began rebuilding less than two years after its World Series title.

He is 17-27 with a 4.80 ERA in 72 starts for Washington. He went 8-13 with a career-best 3.91 ERA and pitching a career-best 159 innings last year.

Gray plans to remain with the team during the early stages of his rehab.

"Obviously I can't go out there and suit up and get strikeouts, but I will hopefully be an encourager as much as possible," he said. "I'm just grateful for that and grateful to be here."