The Yankees were one strike away from a fourth straight win that would have moved them back into the wild-card lead, but instead they added to their list of ugly defeats with a 3-2, 10-inning loss to the lowly Orioles on Thursday night at Camden Yards.

BALTIMORE — One of these losses is bound to be one too many.

The Yankees, a strike away from a fourth straight win that would have moved them back into the AL wild-card lead over the idle Red Sox and Blue Jays, instead added to their list of ugly endings with a 3-2, 10-inning loss to the lowly Orioles on Thursday night at Camden Yards.

“It sucks,’’ starter Jordan Montgomery said. “We don’t really have time to dwell on it. We have to get back on the horse [Friday].”

Leading by a run in the ninth, the Yankees sent right-hander Clay Holmes back out for a second inning and he allowed a one-out single to DJ Stewart.

Pinch-runner Kelvin Gutierrez moved to second on a wild pitch in the dirt and got to third on a Pat Valaika grounder to third before scoring on another wild pitch by Holmes to tie it at 2-2.

Manager Aaron Boone said Gary Sanchez should have done a better job of getting to the high pitch on which Gutierrez scored, but Holmes took the blame for the sinker that got away.

After the Yankees failed to score in the top of the 10th, Wandy Peralta gave up a bunt hit to Richie Martin that sent the extra runner — pinch-runner Jahmai Jones — to third.

An intentional walk to Cedric Mullins loaded the bases for Ryan Mountcastle, who struck out.

Austin Hays hit a chopper past third to end it. The loss dropped the Yankees to 11-8 against the Orioles this season and wasted a solid outing from Montgomery, who had a career-high 12 strikeouts in just 5 ⅔ innings.

Relievers Albert Abreu and Joely Rodriguez got the Yankees through seven innings before Holmes pitched a scoreless eighth.

The culprit wasn’t the pitching as much as it was a lineup that went 1-for-7 with runners in scoring position and left 10 on base.

An agitated Boone called the loss “frustrating.”

He pointed to the fact the Yankees didn’t score after the second inning.

“We weren’t able to add on at all,’’ Boone said. “We’ve got to add on and put teams away. They were able to hang around and got us.”

There were chances, especially in the fifth inning.

An Anthony Rizzo double sent Giancarlo Stanton to third with two out. The Orioles walked Gleyber Torres intentionally to load the bases for Joey Gallo, who had homered in the second.

As the weather worsened, Gallo hit one to deep center that seemed destined for the seats. But instead of a grand slam, it fell short.

“I didn’t have any doubt in mind it was gone,’’ Gallo said. “It was kind of heartbreaking. The wind was maybe a little bit of factor. … It was blowing out and then blowing in. I hit it at the wrong time. It was bad, bad luck.”

They didn’t get another runner in scoring position until the extra runner to start the 10th, when Brett Gardner was stranded.

After Gallo hit his solo homer in the second with one out, Sanchez and Tyler Wade walked before Gio Urshela’s opposite-field double to right scored Sanchez and sent Wade to third.

The rally stopped there, though, when Gardner popped out with the infield in for the second out and Stanton grounded to second. That proved costly.

Montgomery was rolling before the rain picked up in the top of the sixth and the umpires met with the grounds crew in the middle of the inning.

Montgomery immediately fell behind Mountcastle 2-0 leading off the bottom of the sixth, when the lefty said the mound was in “horrendous shape” and he lost his “groove.”

Mountcastle made him pay with a long homer to center to cut the Yankees’ lead to 2-1.

At the end, the Yankees stayed away from Aroldis Chapman, who had pitched three days in a row, and Chad Green, who has been used heavily.

Boone defended both Holmes and Peralta and lamented the lineup.

“We’ve had a lot [of losses] that have stung throughout the course of the year,’’ Boone said. “This certainly falls into that category.”