Cedric Mullins didn’t show anything externally — no visible sigh of relief or display of jubilation — but there was reason to be excited.

The Orioles outfielder hid it well; he’s a veteran who has been through slumps before. But, with two run-scoring knocks in Sunday’s 6-3 victory for Baltimore over the Seattle Mariners, there was the clearest sign yet that Mullins was figuring it out.

He entered Sunday’s game at Camden Yards on a 3-for-35 skid and with a sub-.200 average. He hadn’t recorded two hits in a game in nearly a month. He had only driven in one run since April 28.

“To have success a little bit earlier and then you kind of fall off, I was trying to stick with what was feeling comfortable, what was feeling good,” Mullins said. “Once things felt like they were kind of falling off the rails, that’s when you tinker with it a little bit, do a deep dive into how you’re feeling, what’s your results, what’re you doing. That’s kind of what I’m doing.”

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During this stretch, manager Brandon Hyde gave Mullins time off to work on his swing out of the public eye and without the daily pressures of winning games. Mullins bunted for a hit in Saturday’s game, breaking a hitless streak of five games.

And then Sunday, with two hard-hit singles, Mullins seemed like himself again. The Orioles needed it, especially in the eighth inning, when Mullins’ second RBI single lashed through the right side gave Baltimore and closer Craig Kimbrel a three-run lead.

“I found an adjustment that worked today,” Mullins said. “I’m going to stick with it and keep pushing forward.”

Kimbrel recorded his first save since May 3, sealing a series win for Baltimore. He’s another player who has struggled in recent weeks, who received patience from Hyde when other managers might lose it. For a fourth straight appearance, Kimbrel pitched a scoreless inning, although this was his first back in a ninth-inning role.

The two of them — Mullins and Kimbrel — have the potential to be key figures in Baltimore. Mullins’ defense in center field is enough to keep him in the lineup on a nearly daily basis, but should his bat come around to the levels of recent seasons, he elevates the Orioles’ outfield picture.

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“He’s a huge part,” Hyde said.

And Kimbrel was signed this offseason for $13 million to replace the injured Félix Bautista. There could be movement at the trade deadline for more relief help, but until then the Orioles need their closer to look more like the Kimbrel of Sunday.

“I know he’d been itching to get out there on the mound,” Hyde said. “It was great seeing him go three up, three down.”

Mullins, rightly, won’t count himself out of the woods because of this two-hit game. But the analysis of his swings the last month has shown him to be behind on the fastball and early on off-speed offerings.

To counteract that, Mullins widened his base during his setup. He got his foot down earlier, too, preparing himself for a fastball. In the third inning, he was ready for the 94.7-mph pitch that grooved in; Mullins lined it at 104.2 mph through the middle for his first RBI. His second came in the eighth against a cutter, and again Mullins turned it around with a triple-digit exit velocity.

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“Feeling like I’m playing my game out there,” said Mullins, who also recorded the 100th steal of his career. “That’s something that kind of irritates me the most during a slump. It feels like it’s hard to be myself. To be able to go out there, drive a couple runs in, get a bag, get the legs really just moving, continuing the momentum that the team’s created, that’s my game.”

Even with seven hits against him, right-hander Corbin Burnes was dominant. He matched his season high with 11 strikeouts and induced 19 whiffs — including seven with his slider. Burnes recovered well from his most recent outing, when he recorded a career-low two strikeouts as a starting pitcher.

Burnes allowed a run in the second on Luis Urías’ RBI single, but he faced little adversity the rest of the way. He completed six innings and outpitched right-hander George Kirby, one of Seattle’s marquee rotation options.

James McCann of the Orioles tags out Mariners catcher Cal Raleigh in the third inning. (Mitchell Layton/Getty Images)

Gunnar Henderson jumped all over Kirby from the start, blasting his fifth leadoff homer of the season (and third homer in three games) to raise his season tally to a major league-leading 15 long balls. Kyle Tucker of the Astros hit his 14th and 15 homers Sunday.

The pace from Henderson has been sensational; if he continues this way, Henderson would club 55 homers — which would pass Chris Davis’ single-season franchise record of 53.

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“Pretty average, at best,” Burnes said with a laugh. “I mean, we’re not even through the month of May and he’s got 15 homers. ... He’s got room for improvement.”

Henderson wasn’t alone in breaking through against Kirby. The Orioles hit 10 balls at 100 mph or faster, with eight of the nine players in the starting lineup contributing at least one of those hot shots. First baseman Ryan O’Hearn cranked his sixth homer of the season, and catcher James McCann doubled home second baseman Jorge Mateo.

Colton Cowser, meanwhile, posted a three-hit game that included an RBI and a double — further distancing himself from a quieter stretch at the beginning of the month. Cowser also impressed in right field. He paired with Mateo for an outfield assist to nab a runner at home and later laid out for a diving catch.

But it was Mullins’ performance that could be most encouraging, to adopt a change at the plate and — for at least one day — produce the way he knows he can.

“A long way to go,” Mullins said, “but I like what I saw.”