Luis Severino will be out of the Yankees starting rotation for at least 15 days and it’s tough to say when he will return.

The righthander was placed on the 15-day disabled list Saturday for the right triceps strain that forced him from Friday’s loss in the third inning. But getting back may be about more than just getting healthy.

The Yankees want the pitcher they’ve been expecting Severino to be: the one who was 5-3 with a 2.89 ERA in 11 starts after his call-up in 2015, the one who was to be a front-of-the-rotation force. He’s been nothing like that guy this season. At 0-6 with an unsightly 7.46 ERA in his first seven starts this season, he ranks among the Yankees’ biggest disappointments.

Yankees general manager Brian Cashman was asked Saturday if Severino is guaranteed to return to the rotation when he is healthy and after he has made a minor league rehab start. He wasn’t exactly committed.

“We’ll have to wait and see when he comes back,” Cashman said. “We said before this injury, if it was in the best interest to be in Triple-A, we’d do that. He’s injured right now.”

In truth, there were already indications that the Yankees were leaning toward sending Severino to the minors to help him rediscover his good form.

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Both Severino and Yankees manager Joe Girardi concede that there was no underlying health issue behind his horrid start before Friday when Severino said he first felt discomfort on a pitch during the second inning.

“You don’t throw 97 or 98 hurt,” Girardi said.

“I feel good all this year,” said Severino, who added that he did not feel the strain was a serious. “Yesterday, I don’t know what happened: if I threw a bad pitch or something like that.”

He added that the injury wasn’t a factor in pitching badly Friday. “I think I threw a slider in the middle to the first baseman (Jose Abreu),” he said. “He hit a double (it was scored a single) and the runs came in. Nothing else.”

“His stuff’s not there, bottom line,” Cashman said. “His arm strength is there, but his stuff is not there. He doesn’t have command of his fastball. He doesn’t have command of his secondary pitches. His changeup and slider have been inconsistent. It’s not health related.

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“He just has been very inconsistent with his secondary stuff and his fastball command. At times it leaves you naked with one pitch that you can’t even command, and you can’t be that way in the big leagues.”

Giardi said the thing that should bring it all together for Severino would be locating his fastball. But until Cashman sees some signs of that happening, it’s not likely that Severino will rejoin the rotation.

“Clearly he’s not pitching anywhere close to his capabilities,” Cashman said. “The most important thing is just to try to get him going.”