Count one former major leaguer who has made his conservative bona fides well known out of the Donald Trump camp.

Curt Schilling, no stranger to vigorous Twitter debates over, among other things, evolution and trolls who came after his daughter, used the platform to take issue with the presidential candidate’s comments on the war record of Sen. John McCain, a prisoner of war during the Vietnam war. Schilling, whose Twitter page photos contain photos of a military cemetery and a serviceman, said he was crossing Trump off the Republican candidates he is considering.

McCain, the 2008 Republican candidate, was imprisoned for nearly six years in North Vietnam and Trump found other Republican candidates distancing themselves from him after for questioning whether McCain was a war hero in Ames, Iowa.

[Trump belittles McCain, sparking Republican candidates’ rebukes]

“He’s not a war hero,” Trump said. “He’s a war hero because he was captured. I like people who weren’t captured.”

Trump also said he believes that McCain has not served veterans’ interests.

“John McCain talks a lot, but he doesn’t do anything,” Trump said. “I don’t like the job that John McCain is doing in the Senate because he’s not taking care of our veterans. . . . I’m with the veterans all the time. Some of these people wait four or five days just to see a doctor. They sit in a reception room, which is dirty and filthy and disgusting.”

Schilling, now an ESPN baseball commentator, spent a portion of Saturday afternoon defending his tweet and explaining his stance.