5 players Mariners could trade for at 3B, a big position of need

The Seattle Mariners once again find themselves in the thick of the playoff hunt with the calendar soon flipping to July.

It’s familiar territory for the ballclub. They’ve been in contention down the stretch the past four seasons, yet they have just one playoff berth to show for it.

Seattle Mariners trade targets from each clear deadline seller

Seattle can help make sure it cracks through to the postseason this year with the right trades over the next months, but where does the team need to upgrade most?

Yahoo Sports’ baseball writer and co-host of the Baseball Bar-B-Cast Jordan Shusterman shared how he would like to see the Mariners add to their roster during a conversation with Seattle Sports’ Bump and Stacy on Tuesday.

“I think it’s probably just third base. I think that’s the easiest, simplest answer – with all due respect to what Ben Williamson has done as a rookie,” Shusterman said. “And I think we should note that maybe a couple weeks ago you would have said second base too, but Cole Young is seemingly starting to kind of get more comfortable, and I think that is an exciting development.”

Shusterman added another trait he’d like to see the M’s covet at the deadline, too.

“They need more right-handed power,” Shusterman said. “Power in general I think is still going to be important for this team moving forward because it can’t just be Cal Raleigh hitting the home runs.”

Here are a look at some potential third base targets, some of which bring the power Shusterman mentioned as a need.

Seattle Mariners trade targets

Eugenio Suárez, Arizona Diamondbacks

There may not be a better fit for the Mariners at third base than Suárez, a fan favorite who spent the 2022 and 2023 seasons in Seattle. The right-handed-hitting slugger is having one of his best seasons with 25 home runs, an NL-leading 67 RBIs and a 141 wRC+ (100 is league average). Suárez also plays good defense, which would help make up for what the M’s would lose by playing Williamson less. The Diamondbacks are facing a rash of injuries right now, which could be what leads to them eventually selling major league pieces.

Alec Bohm, Philadelphia Phillies

Bohm’s name came up a lot as a potential fit for the Mariners last season, and that still rings true in 2025. The right-handed hitting corner infielder hasn’t hit for much power this season, but his .717 OPS and 100 wRC+ are both upgrades from the production Seattle has received at the hot corner. Bohm’s improved defense, ability to fill in at first base, and club control through 2026 also make him an intriguing target. Philadelphia is a contender, which could make this tricky.

Alex Bregman, Boston Red Sox

Odds are the Mariners aren’t going to be trading for Bregman, but he’s worth a mention since he could be the best player available at the deadline. This would be a trade that costs a lot both in terms of prospect capital and payroll, but it’s also one that could push the team over the top. I mean, who wouldn’t want a guy with a .938 OPS and 158 wRC+ (which are both better than Guardians star José Ramírez)? Bregman can opt out of the final two years of his contract after this season, which makes this another complicated target.

Ryan McMahon, Colorado Rockies

McMahon is one of the few viable trade candidates from the lowly Rockies. There are some things to like about the left-handed hitter. He makes a lot of hard contact, walks plenty and plays good defense at third base. But he also strikes out a lot and has been a Coors Field merchant throughout his career (.820 career OPS at his hitter-friendly home ballpark, .665 on the road). McMahon is signed through 2026 and set to make $16 million each of the next two seasons, which probably means the Rockies would need to be willing to pay down some of his contract.

Jordan Westburg, Baltimore Orioles

Westburg is the most intriguing out of two potential targets from Baltimore. The 26 year old was an All-Star last season and doesn’t hit arbitration until 2027. His numbers are down this season, but he’s still been about league average (99 wRC+) and there’s plenty of upside. The cost for Westburg would steep. A cheaper and less splashy option from the Orioles would be Ramón Urías, the older brother of former Mariners infielder Luis Urías.

Hear the full conversation with Yahoo Sports’ Jordan Shusterman at this link or in the audio player near the top of this story. Bump and Stacy airs weekdays from 10 a.m.-2 p.m. on Seattle Sports. 

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