“It’s impeded my ability to work out,” Patrick said, adding that he’s “just glad I can walk”

Christopher T. Saunders/Paramount+ ; Robert Patrick Instagram

1923 star Robert Patrick says a recent ACL injury is the reason why his appearance on the hit Yellowstone prequel series is so different from what fans expect.

In a TikTok video published earlier this week, Patrick said that some viewers have even asked him directly if he wears a “fat suit” on the show.

“I said, ‘No, actually, I’m not wearing a fat suit. That’s me. That’s Robert Patrick,’ ” the veteran character actor, 66, said. “So I guess I’ve put on a few pounds and maybe people are surprised to see it, I don’t know.”

“Thanks for asking… it’s all me,” he captioned the video.

Patrick said he sustained an ACL injury about a year and a half ago, which he had never talked about before. The injury happened when he fell off a step ladder just before Christmas.

“It’s impeded my ability to work out,” Patrick explained, adding that it has taken a “great deal of time” to overcome it. “I’m just glad I can walk,” the Peacemaker star said.

“My ACL is gone,” he later said. “So I can’t really do a lot of cardio unless I walk. But I have put on a few pounds. And thanks for noticing.”

Robert Patrick in August 2024.

Patrick has a recurring role in 1923 as Sheriff William McDowell. He is slated to work with Yellowstone co-creator Taylor Sheridan on another project, Tulsa King, with Deadline reporting on March 21 that he joined the show’s third season.

Robert Patrick in ‘Terminator 2: Judgement Day’.

The actor is best known for playing the evil T-1000 in Terminator 2: Judgment Day in 1991. His plethora of TV credits includes The X-Files, True Blood, Scorpion, Mayans M.C., Reacher and Peacemaker.

The final two episodes of 1923’s second season will be released on Paramount+ on March 30 and April 6. Harrison Ford and Helen Mirren star as Jacob and Cara Dutton, the ancestors of characters featured in 1883 and Yellowstone.