BALTIMORE — Oswaldo Cabrera and Franchy Cordero kept the Yankees afloat for a while Friday afternoon, but enough cracks from Clarke Schmidt and Jimmy Cordero sunk them anyway.

The Yankees watched as the Orioles set off fireworks at Camden Yards ahead of their home opener, and Baltimore kept the blasts coming to win a 7-6, back-and-forth affair in front of a sellout crowd of 45,017.

Schmidt was knocked around for a second time this season, and the Yankees’ bullpen unraveled in the seventh inning as they dropped the series opener.

In the decisive seventh inning, the score was tied 5-5 when Ron Marinaccio walked Ryan Mountcastle, then was pulled for Cordero.

Manager Aaron Boone said he wanted the fireballing right-hander against the bottom of the Baltimore order, which was filled with righties, but Cordero was a mess immediately.

“I missed locations and cost us the game,” said Cordero, who had been solid in his first two outings of the season.

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Cordero’s first pitch went to the backstop, and his second, to Ramon Urias, was crushed off the wall in left-center field for a go-ahead, RBI double.

After Urias advanced to third on a ground out, Cordero’s sixth pitch of the game was a second wild pitch, which brought Urias home for a 7-5 Orioles lead.

“He’s been good for us,” catcher Jose Trevino said of Cordero. “Just one of those days.”

The Yankees got a run back in the eighth, when Cabrera, who went 3-for-4 with a double and three RBIs, drilled a run-scoring single into right field.

With runners on first and second and none out, Trevino hit a bullet that bounced right to Urias, the third baseman, who stepped on the bag and threw to first for a double play.

After Cabrera stole third, manager Aaron Boone left righty-hitting Isiah Kiner-Falefa (who was in the game playing center field) in to face Baltimore righty Bryan Baker, eschewing the switch-hitting Aaron Hicks. Kiner-Falefa struck out to end the inning.

“Neutral guy,” Boone said accurately about Baker, before suggesting he valued Kiner-Falefa’s bat more than Hicks’ proclivity for walking in the situation. “We’re looking for a hit in that spot, too. It’s not an on-base situation necessarily.”

The Yankees threatened in the ninth inning, when Aaron Judge advanced to third base on a walk, stolen base and wild pitch. Baltimore closer Felix Bautista, however, got Anthony Rizzo to fly out to finish the game and set off more fireworks.

All six of the Yankees runs were driven in by corner outfielders Cabrera and Franchy Cordero, who drilled his first Yankees home run — a three-run shot in the fourth — to get his team back in the game.

The first righty bat off the Yankees’ bench was Kiner-Falefa, who popped up with a runner on third as a pinch-hitter for Franchy Cordero in the sixth inning.

Hicks, who appears to be the fifth outfielder at the moment, again did not play and has started two of seven games this season.

Without Hicks, the Yankees had climbed out of the early hole on the backs of their corner outfielders and grabbed a 5-4 lead in the top of the sixth, when Cabrera crushed a two-run double, but the edge only lasted until the bottom of the inning. Adley Rutschman beat Marinaccio for an RBI single that tied up the score until Cordero helped untie it.

The Yankees had to lean on their bats and the bullpen because their starter was shaky.

Schmidt was hit hard — 11 batted balls were struck at least 95 mph — and he was chased after 3 ¹/₃ innings, in which he allowed four runs on five hits and three walks. The 27-year-old allowed two runs apiece in the second and third innings, burying the Yankees in a 4-0 hole.

The Orioles grabbed their first lead in the second inning, when Gunnar Henderson singled and was later driven in by Adam Frazier’s single.

“In that second inning, trying to nibble at it, trying to be making the perfect pitch,” said Schmidt, whose ERA is 9.45 after two starts. “You’re trying to be too fine with it. Sometimes it’s a mindset thing. I feel like I have to continue to attack guys over the whole outing.”

With two on and one out, Austin Hays hit what might have been an inning-ending double play, but Gleyber Torres booted the ball, which allowed Urias to score.

An inning later, Rutschman walked before Anthony Santander doubled. After a sacrifice fly, Henderson’s RBI double gave the Orioles a fourth run, and the Yankees’ bats had to go to work.

The Yankees started poorly and, as it turned out, they finished poorly.