The Mariners’ next roster puzzle is already coming into focus, and it starts with four young names who all reached the majors in 2026.
Colt Emerson, Kade Anderson, Lazaro Montes and Michael Arroyo each got their first big league look this season, and the results came in very different flavors. Emerson opened with a burst, Anderson finished with a strong stretch, Montes flashed one jaw-dropping blast along with plenty of swing-and-miss, and Arroyo turned in a short but eye-catching run at the plate.
Emerson, 21, came out hot in his first 22 games, hitting .233/.309/.575 with six home runs, five doubles and a triple. The rest of his season was much rougher. Over his final 47 games, he hit .169/.214/.216 with only three extra-base hits before a wrist surgery ended his year.
Anderson, 22, had his bumps early, but he closed on a much better note. He threw seven shutout innings in his penultimate start, then added 3 1/3 scoreless innings in his last outing before a line drive to his left forearm cut the night short.
Montes, 21, gave the Mariners the kind of raw power they’ve been waiting to see. He hit a 474-foot home run, the longest in T-Mobile Park history. But the swing-and-miss concerns were there too, with a 40.7% strikeout rate across 59 plate appearances.
Arroyo, 22, made the strongest statistical impression of the group in a 15-game sample. He hit .371/.439/.514 with one homer and two doubles, and he nearly matched his walks and strikeouts, drawing five walks against six strikeouts.
Those four debuts are now feeding into a bigger question for Seattle: how does the club sort through all of this when 2027 arrives? In a recent conversation on Seattle Sports, Mariners insider Shannon Drayer and Brock and Salk co-host Mike Salk talked through that exact issue and the decisions the team could face with its young talent.
Salk pointed to Arroyo as a possible everyday left fielder once Randy Arozarena departs, but also flagged the risk of leaning too heavily on youth while trying to stay in contention. He raised the same concern with Montes, noting the strikeouts and saying, “he’s not a complete baseball player yet. I hope he ends up getting there.”
He also wondered how the Mariners would handle Emerson after a season that included both bright spots and real struggles, especially with the injury complicating the picture. And if a new manager is stepping in, Salk said he’d likely want veterans in place to steady things.
Drayer’s answer kept coming back to the same reality: the roster will have to be shaped by what is actually available, not just by the wish list. She said the team will have to figure out where these players fit and whether they can coexist with enough veteran support around them.
She also brought up Donovan’s flexibility and the need to settle the shortstop spot early. On Emerson specifically, Drayer said, “I don’t think you start Colt Emerson after finishing the season coming off of a surgery, and he had basically been sent down before that surgery. So, you need to give him a chance to get up and running.”
Still, Drayer liked what she saw from the rookies overall, aside from Emerson’s injury situation. She said they handled themselves well, were comfortable without being careless, and “fit in” with the group. Her bottom line was that Seattle could go with all four if it wanted to, but it would need backup if young players hit the usual rookie bumps.
Salk closed by stressing that the rest of the core would have to carry plenty of weight too. He said the Mariners need a better year from Cal Raleigh, Julio Rodríguez and Josh Naylor, along with a healthy Brendan Donovan, or the whole setup becomes too youth-heavy to work.
In Other News...
Mariners Just Caught A Break In Their Manager Search
The Mariners managerial hunt has already been shaping up as one of the more expansive searches in the sport, with the club working through a long list of candidates as it looks to replace Dan Wilson. Seattle has reportedly cast a wide net, and the process has included familiar names such as Joe Espada, Rocco Baldelli, Brandon Hyde and David Ross, along with coaches whose seasons are still alive in the postseason.
One little bit of clarity arrived on the other side of the league as the Phillies opted to keep Don Mattingly in place rather than open up a broader search of their own. For Seattle, it does not solve anything directly, but it does remove one more possible wrinkle from a market already full of moving parts, leaving the Mariners to continue sorting through a crowded field while other clubs settle their decisions. [Read more 🡒]
Mariners Search Just Got Bigger Than Joe Espada Alone
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That makes the next step in the Mariners process a little more complicated and a lot more telling. If Espada is a candidate, Seattle will likely want to know who he would bring into the room and how he would want to shape the day-to-day operation, especially with Houston making so many changes around him. The fit is still there to be explored, but the staff conversation may wind up being just as important as the manager conversation. [Read more 🡒]
Mariners Prospect Jarvis Gomez Suddenly Looks Like A Name To Watch
Jarvis Gomez has moved onto the radar in a hurry after a strong summer in the Dominican Summer League gave the 17-year-old outfielder from San Isidro a real foothold in the Mariners system. His combination of plate discipline, power and speed has made him easy to notice, and the organization recently brought him to Seattle to accept its MiLB Hitter of the Year honor, a sign of how much progress he made in a short time.
For Seattle, the next step is less about the award and more about what comes next for a player still early in his development. Gomez is focused on getting stronger and improving his conditioning, and the Mariners are keeping him close to that process with another key stop on his calendar later this month. It is the sort of developmental path that can turn a promising summer into something more lasting, which is why he suddenly feels like a name worth filing away. [Read more 🡒]