5 Mariners players with the most to lose in 2nd half with huge stakes

The Seattle Mariners will resume their 2026 season on Friday, and nobody is under any false impressions about what's at stake. So far, a year that was meant to be "World Series or bust" has veered in the direction of the latter. Everyone needs to play a part in the second-half rescue.

It's easy to believe that things can only get better. After all, the Mariners finished the first half at 48-49 even though very little went right. They're still considered a World Series contender, and they know they can bank on injury returns and elite pitching as positive influences.

But since there's a lot that could still go wrong, it's worth zeroing in on five players who have more at stake than most in the second half.

At stake for key Mariners players in second half are money, jobs and reputations

5. Cal Raleigh, C - His reputation

You can argue that Raleigh's reputation is already shot. He was a 60-homer slugger and the runner-up for the AL MVP in 2025. Halfway through 2026, he's batting .169 with -0.2 rWAR. If that's not a fall from grace, nothing is.

Even now, though, there's the nagging belief that Raleigh is simply too good to be this bad. Even if he lives up to his 30-homer self of the days before 2025, he can put the Mariners on his shoulders. If not, they'll feel the pain of last season being revealed as an all-time fluke.

4. Luis Castillo, RHP - His rotation spot

Truth be told, it would be better for everyone if the Mariners simply traded Castillo. He's too established to be the default man on the bubble for the six-man rotation. And if he can bring back a right-handed bat and/or relief pitcher in a trade, then why not go for it?

And yet, the trade possibility hinges on other teams valuing Castillo despite his $24.15 million salaries for 2026 and 2027, as well as in the face of years of declining production. Him sticking around is a realistic outcome, and that would put the Mariners in an unenviable position of eventually having to move him to the bullpen to make space for top prospect Kade Anderson in the rotation.

3. Colt Emerson, SS - His role in the majors

Emerson need not worry. No matter what happens, he's the default shortstop in the Mariners' plans for the long term. They even made a $95 million bet on that outcome back in March.

But for how much longer can the Mariners remain committed to him for the rest of 2026? He'll only turn 21 on July 20, and he's looked more and more like he needs additional time in the minors. Nobody doubts the defense, but an overall 34.4 K% and a .169 average over his last 23 games suggest he's too easy of an out for major league pitchers.

2. Rob Refsnyder, DH/RF - His job

It's a wonder that Refsnyder even still has a job. He's gotten into 49 games this year and gone 14-for-105 with -1.1 rWAR. He has a .458 OPS against left-handed pitching, marking a stunning failure at his one job.

It felt like a bit of mercy when Refsnyder went on the IL in June, as it had become hard to hide that the soreness he was feeling in both knees was too much to play through. Now the question is what will come first: Him returning to good health and (hopefully) productivity, or the Mariners sidelining him in favor of a trade deadline acquisition.

1. Randy Arozarena, LF - A huge free-agent payday

Arozarena was the Mariners' lone All-Star in Philadelphia, and that pretty much confirms what a bright spot he was in the first half. Even if he didn't hit for as much power, there's a lesson for the rest of the offense in how his average and OBP went way up.

But could Arozarena be primed to regress? There are metrics that suggest as much, and the reality is that he's over-performing his established baseline. He's more like a 120 OPS+ guy rather than the 140 OPS+ guy he is now.

If regression does find Arozarena, his pocketbook stands to feel the pain. As of now, he's arguably the best hitter set to reach free agency this winter. As of later, perhaps not.

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