PEORIA, Ariz. — The message out of Mariners camp wasn’t subtle. It wasn’t cautious. It wasn’t wrapped in front-office hedging. When general manager Justin Hollander was asked about Cole Young’s trajectory, his answer landed like a declaration: the kid is ready.

For a franchise searching for stability up the middle and consistency at second base, that statement could carry enormous consequences. Cole Young showed flashes as a rookie in 2025, but flashes weren’t enough. He didn’t finish the season as Seattle’s primary second baseman. He didn’t make the postseason roster. And by October, questions about durability, adjustments, and late-season fatigue were louder than the highlights.

Now, entering 2026, the tone has changed.

“I think he really changed his body this offseason. I’m really proud of what he did,” Hollander said in a radio interview that quickly made waves across the Pacific Northwest.

That kind of praise from the GM of the Seattle Mariners isn’t tossed around lightly. Not for a 22-year-old trying to reclaim a job. Not for a player whose rookie campaign ended with a brutal 3-for-51 skid over his final 21 games.

But inside camp, the transformation is visible.

“He’s moving better, he’s throwing better,” Hollander added. “You’ll see him maintain consistent bat speed, a consistent approach, and get to some pitches he maybe didn’t get to at the end of last season when he was tired and the league had exposed a small hole.”

That “small hole” became a gaping one in September. Pitchers attacked him inside. Breaking balls expanded the zone. The grind of a 162-game schedule appeared to sap the explosiveness from a player listed at 5-foot-11, 180 pounds. By the time the postseason arrived, Young was watching, not contributing.

And yet, rewind to the middle of the summer, and the story looks dramatically different.

From June into mid-August, Young authored a 50-game stretch that hinted at stardom. He slashed .281/.369/.399 with a .768 OPS, clubbing three home runs, seven doubles, and a triple, while walking 20 times against just 28 strikeouts. For a rookie infielder adjusting on the fly, the plate discipline was striking. The confidence was undeniable.

Then came the blast that turned heads league-wide.

At T-Mobile Park, Young launched a 456-foot missile into the second deck in right field — the longest home run by any Mariners player that season. Yes, longer than all 60 hit by Cal Raleigh. For a moment, Seattle saw the full package: contact, discipline, unexpected power.

But baseball is unforgiving. The league adjusted. Young faded.

Now the question hovering over Peoria is simple: was that late-season collapse a warning sign — or a growing pain?

Seattle’s offseason moves only intensified the spotlight. The Mariners traded for All-Star utility standout Brendan Donovan, a player who has logged more innings at second base than anywhere else in his career. Yet Donovan has been working primarily at third this spring, a subtle but meaningful signal. Top prospect Colt Emerson has rotated between shortstop and third. That leaves second base as an open battlefield.

Young’s competition is real. Ryan Bliss brings energy and speed. Leo Rivas offers defensive versatility. Miles Mastrobuoni has experience. None, however, carry Young’s ceiling.

“I think he’s showing us that he’s ready to play in the big leagues and ready to just take the job and run with it,” Hollander said. “What he needed to do, he did. He checked that box.”

That “box” was physical maturation. Strength. Endurance. Sustainability.

Insiders say Young dedicated his winter to rebuilding his frame — not bulking recklessly, but refining explosiveness and stamina. The goal was simple: survive September the way he thrived in July. Early returns this spring suggest sharper throws, quicker first steps, and bat speed that doesn’t fade deep into at-bats.

For a Mariners club balancing present contention with long-term vision, the stakes are high. Seattle believes its core can compete now. Stability at second base isn’t a luxury — it’s a necessity. If Young claims the job and holds it, the lineup deepens organically. If he falters again, the dominoes shift quickly.

There is also a psychological element at play. Being left off the postseason roster stings. Young hasn’t publicly dramatized it, but teammates say it fueled him. There’s a visible edge in workouts. A quiet urgency.

The Mariners aren’t handing him the role. Hollander’s words were supportive, not declarative. But in a camp full of position battles, no endorsement has been louder.

Seattle has waited patiently for one of its top prospects to seize an everyday infield job and make it untouchable. The organization invested in Young’s development, believing his advanced hit tool and baseball IQ would translate quickly.

Now, as Opening Day approaches, the tone out of Peoria is unmistakable.

Cole Young isn’t just competing. He’s asserting.

If this spring surge holds, the Mariners may have found their answer at second base — not through trade deadlines or blockbuster deals, but through internal growth and offseason resolve.

And if Hollander is right, the 22-year-old who stumbled across the finish line in 2025 might be sprinting into 2026 ready to own it.