Cam Schlittler just got some huge praise from David Ortiz … who shoveled the “ace” label on the Yankees rookie following his incredible game on Thursday night.

Just hours after the New York hurler went eight innings of shutout ball in a do-or-die win over the Red Sox, Ortiz fired off compliment after compliment after compliment on the right-hander.

Big Papi — who had just gotten off a flight at LAX — told us he’s already seen enough from the flamethrower to dub him a front-of-the-rotation guy.

“He was abusing us last night.”

Schlittler ended the 4-0 win with 12 strikeouts and no walks … and a little bit of trash talk as well.

But while Ortiz was disappointed with the outcome — he made it clear he’s still optimistic about the Red Sox’s future.

He told us they just need to “add some thunder” in free agency … and he expects to be right back in contention in 2026.

“We are not far away from where we need to be, to be honest with you,” he said.