MLB insider floats an unexpected Mariners trade after Rob Refsnyder signing

Christmas came a little early for Seattle Mariners fans who had been waiting not-so-patiently for a new bat following the departure of Jorge Polanco. On Monday, the club struck a one-year, $6.25 million deal with veteran outfielder Rob Refsnyder.

He's at least half the big bat the Mariners need to account for Polanco's absence, but there is the awkward question of how, exactly, he's going to get regular at-bats in 2026. As of now, he looks like a platoon DH with Dominic Canzone, with time in the corner outfield spots walled off by Randy Arozarena in left and a Victor Robles/Luke Raley platoon in right.

Jon Morosi floats an unexpected Mariners trade after Rob Refsnyder signing

Then again, there is the possibility that another shoe will drop that would open up more playing time for the 34-year-old Refsnyder, who had a .924 OPS against lefties in four seasons with the Boston Red Sox. To this end, Jon Morosi of MLB Network floated an interesting possibility on Monday.

“The signing of Refsnyder, for me, is the type of move you would make if you were expecting to flip Robles for a left-handed bat somewhere,” Morosi said on Wyman and Bob of Seattle Sports. “That’s where my brain goes. Your outfield is a little bit right-handed and maybe we’re about to see a re-balancing of the lineup in some way.”

Trade Robles? Sure. Why not?

That would free up Refsnyder to be the right-handed component of platoons at DH and right field. It's always good to have flexibility like that, especially given that right-on-left platoon hitters get limited opportunities by default. This year, 72.6 percent of all pitches were thrown by right-handers.

The catch is that Robles only has so much trade value. His 77-game stint with the Mariners in 2024 is a big success in a greater sea of mediocrity, accounting for 3.1 of just 4.4 total rWAR dating back to 2020. He might not have much surplus value on top of even his $5.125 million salary for 2026.

Still, it could be possible for the Mariners to throw Robles into a bigger trade as a money-saving tactic. It could be possible in a Ketel Marte trade, and it might even be realistic in a trade for Brendan Donovan. The St. Louis Cardinals would technically save money on Donovan's $5.4 million projected salary, and they could perhaps be willing to do so it it also meant getting back Lazaro Montes or Jurrangelo Cijntje.

Granted, the Mariners would be selling low on Robles if they moved on from him like this. That could prove to be a case of judging him too harshly for not finding his hitting stroke (i.e., .611 OPS) after badly injuring his shoulder in April.

But with a World Series trip in their sights for 2026, the Mariners simply need to field the best team they can. If they can subtract Robles but still upgrade their offense via a better hitter and more at-bats for Refsnyder, they'll need to do it.