Mariners Place Dylan Moore On Unconditional Release Waivers

TODAY: Moore cleared waivers and has now been placed on unconditional release waivers, the Mariners announced.

AUGUST 23: The Mariners announced this afternoon that they’ve designated utility man Dylan Moore for assignment. Moore’s spot on both the 40-man and active roster will go to outfielder Victor Robles, who was activated from the 60-day injured list in a corresponding move. Robles was recently dealt a ten-game suspension for an incident where he threw his bat towards the pitcher’s mound during a minor league rehab game. Robles will need to serve that suspension in the majors, but Daniel Kramer of MLB.com writes that Robles is expected to be in tonight’s lineup while he appeals the suspension.

Moore, 33, was the longest-tenured player on the Mariners roster prior to his DFA. The utility man debuted with the club back in 2019 and appeared in 113 games before breaking out in a big way during the shortened 2020 season. Moore appeared in 38 games for Seattle that year, and slashed an excellent .255/.358/.496 (140 wRC+) with eight homers and 12 steals in 159 trips to the plate. That was enough to make him the second best hitter on the roster, behind only catcher Austin Nola.

He dropped back below average in 2021, but starting in 2022 enjoyed a three-year stretch of above-average offense (113 wRC+) that also saw him swipe 60 bases and win a Gold Glove award.  Even in his leaner offensive seasons of 2019 and ’21, Moore’s impressive versatility was enough to make him a valuable piece of the Mariners roster. He’s appeared at every position on the diamond except for catcher throughout his time in the majors, included a one-inning cameo on the mound during his rookie season.

That versatility combines with his speed (116 steals in 156 career attempts) to make Moore a valuable role player every season. Another notable trait of Moore’s that has made him valuable to the Mariners over the years is his knack for hitting well against southpaws. While he’s a career 92 wRC+ hitter against right-handed pitching, that jumps up to 110 when looking at his work in 675 plate appearances against lefties. His work against opposite-handed pitching has been even more impressive in recent years, as he slashed .233/.356/.425 (129 wRC+) against lefties during his peak seasons from 2022 to ’24.

All of that came apart in 2025, unfortunately. This year has been the worst of Moore’s career by a wide margin. He’s hit just .193/.263/.359 (78 wRC+) in 88 games while striking out at a career-high 35.7% clip. His typically strong defense all over the diamond hasn’t rated well by the metrics this year. Most concerning is his vanishing production against left-handed pitching; while his 91 wRC+ against righties this year is right in line with his career norms, Moore has hit just .149/.257/.309 (66 wRC+) with a 40.4% strikeout rate in 109 plate appearances against lefties this year.

That production simply wasn’t tenable for even a bench role, and now the Mariners have opted to part ways with the veteran just a few months before he otherwise would have reached free agency. Seattle will have one week to attempt to pass Moore through waivers, where he can be claimed by any MLB club willing to give him a spot on their roster and pay the remainder of his 2025 salary. Should he clear waivers unclaimed, the club could try to outright him to the minor leagues but he has more than enough service time to reject that outright assignment in favor of free agency.

Replacing on Moore on the roster is Robles, who suffered a dislocated shoulder back in April and has been on the injured list ever since. A former top prospect who spent parts of eight seasons with the Nationals, Robles broke out with the Mariners at the age of 27 last year as he slashed .328/.393/.467 with 30 steals in just 77 games. That elite production was enough to earn Robles a two-year extension with the club, but year one of that deal hasn’t gone especially well between his lengthy stay on the IL and the aforementioned suspension he incurred during his rehab assignment. With Randy Arozarena and Julio Rodriguez entrenched in left and center field respectively, Robles figures to share time with Dominic Canzone and Luke Raley in left going forward.