A Mariners trade for Marlins SS Otto Lopez is worth the resulting roster headaches

It's often said that sports reflect society and in this respect, the 2026 season for the Mariners proved more than ever that there are few certainties in life. The chief example being a team picked by many as preseason favorites to make it to the World Series, instead enduring their most disappointing year in franchise history. As such, even though Colt Emerson is projected as the long-term starting shortstop in Seattle, the M's would be wise to at least consider a high-profile alternative in Miami.

As first reported by Barry Jackson of the Miami Herald, the Marlins are willing to listen to offers for Otto Lopez and Xavier Edwards. Interestingly, SoDo Mojo's Zachary Rymer previously covered both as potential candidates back in July ahead of the trade deadline. However, with Cole Young cemented at second base in Seattle, we're more intrigued by Lopez specifically at shortstop.

Now yes, at the time of Rymer's article, it was not common knowledge that Emerson's slump was being impacted by a lingering left wrist issue. However, even though he has since had surgery to deal with the injury, we would still urge Jerry Dipoto and company to reach out about Lopez. Even fully healthy, there are no guarantees Emerson will pan out as projected, whereas Lopez has established himself as a quality and consistent player on the southeastern coast of Florida.

The glove has always been there, but now the bat is also similarly outstanding

Lopez's main asset is his defence, which is where the Mariners undoubtedly need plenty of help after finishing this season ranked dead last in the majors in team Fielding Run Value. Interestingly, he only started playing regularly at shortstop last season, but -- dare we say it given he plays for the Marlins -- he took to it right away like a fish to water. This year he led all shortstops in double plays started, ranked in the 98th percentile for Range (OAA) and overall was in the 95th percentile for Fielding Run Value.

Where the 28-year-old really helped establish himself on the big stage though, was with his improved prowess at the plate. He's always been a reliable batter, but in 2026 he led the majors with 191 hits and was a doubles threat, on the way to setting single-season bests of a .786 OPS and 122 OPS+. The result was a new career-high of a 6.1 bWAR in a season when he also earned his first ever All-Star selection, for a guy who also has stolen base potential.

Making Lopez even more enticing is that he's under team control through the 2029 season, although this is where things get more challenging. The reality is that any potential return package would have to be significant, with Jackson saying interested teams would have to offer "a lot." And yet given the general high-floor nature of his profile, we'd risk offering a Lazaro Montes or a Michael Arroyo and see if that gets the conversation started.

Having Otto Lopez and Colt Emerson on the same roster would create a positive problem

Still, this does bring us back to the situation with Emerson, in terms of what the Mariners might do with a player they've invested in until at least 2033. As far as we're concerned though, this would be a good problem to have, it the Mariners were able to trade for Lopez. One potential solution is to give Emerson more reps at third base, where he played 15 games last season and is a position which needs solidifying, with Brendan Donovan showing little promise there in 2026 even when he was healthy. (In addition, Donovan has the defensive versatility to play elsewhere.)

Overall, we appreciate the general consensus will be that the Mariners are unlikely to pursue Lopez just because of already having Emerson. And yet Dipoto should be open to taking more risks just by virtue of being in the last chance saloon for his tenure in Seattle. Additionally, as much as the return package would have to be substantial, the same is not true for the financial compensation. MLB Trade Rumors projects Lopez to make around $5.4 million next season in his first year of arbitration eligibility.

Again, there are no certainties in life. As much as we all hope Emerson does pan out in Seattle, we close out by offering a certain Jarred Kelenic as a can't-miss prospect, who did in fact miss. And that alone, is enough reason for the Mariners to get in touch with the Marlins' front office.

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