Mariners sign Simeon Woods Richardson to minor league deal with Tacoma

What happened

The Seattle Mariners have signed right-hander Simeon Woods Richardson to a minor league contract, with the Tacoma Rainiers announcing his addition to their roster, per MLB Trade Rumors. The move comes as Seattle navigates a rotation opening after starter Emerson Hancock left his most recent outing over the weekend with an adductor strain.

Woods Richardson arrives in his third organization of the 2026 season. He began the year in Minnesota's starting rotation, landed with Toronto, was waived by the Blue Jays twice this season without being claimed, and elected free agency after that second unclaimed pass through waivers, per MLB Trade Rumors. The Mariners are now the latest club to take a look at a pitcher who, not long ago, looked like a reliable mid-rotation piece.

Why it matters

A minor league deal keeps things appropriately low-stakes on paper: a contract of this type does not place Woods Richardson on Seattle's 40-man roster, and Tacoma is where the organization can evaluate him without committing a spot. But the context around the signing gives it a bit more operational weight than a typical depth move.

Hancock's adductor strain, reported over the weekend, has left a visible gap in Seattle's rotation plans. The Mariners have Kade Anderson, Logan Gilbert, and George Kirby lined up for the upcoming three-game home series against the Athletics — a stretch that does not immediately require Woods Richardson to do anything. What happens beyond that series, and whether Hancock's absence extends further, is the question that makes a Triple-A arm with starting experience worth a look.

Woods Richardson is a former second-round pick who pitched at a league-average level for the Twins across two prior seasons, per MLB Trade Rumors. That track record, modest as it reads, is the kind of baseline that makes a reclamation attempt sensible. The Mariners are not betting the rotation on him; they are adding a name to the depth chart at a moment when the depth chart has a visible hole.

The numbers

Per MLB Trade Rumors, Woods Richardson posted a 4.11 ERA with a 21.5% strikeout percentage across 51 appearances — all but one as a starter — over his two seasons in Minnesota. That body of work earned him a spot in the Twins' starting five to open 2026.

His numbers deteriorated significantly this season, per the report, to the point where he lost his rotation spot before eventually being waived. The source text notes his ERA climbed to a level that prompted Minnesota to move on, though the exact 2026 figure was not fully available in the report. What is clear is that 2026 has been a difficult season for the 25-year-old, representing a meaningful step back from the serviceable baseline he had established.

The 4.11 ERA and 21.5% strikeout rate from those prior seasons describe a pitcher who misses bats at a roughly league-average clip and keeps runs in check without much margin for error — the kind of profile that works in a rotation when the command is on and unravels quickly when it is not. It is also the kind of profile that keeps organizations interested even after a rough stretch, which is precisely why he is now in Tacoma rather than entirely out of affiliated ball.

Where the club stands

Seattle enters this stretch at 66-76 (.465), sitting third in the AL West and 7 games back in the division. In the Wild Card picture, the Mariners rank eighth, 5.5 games relative to the cut line — a gap that makes the postseason a long shot at this stage of September, though not a mathematical impossibility. The club has dropped its last two games heading into the upcoming home series.

The next three games bring the Athletics to T-Mobile Park. Thursday's probable matchup has Kade Anderson opposing Jack Perkins, Friday lines up Logan Gilbert against Kade Morris, and Saturday features George Kirby against Jeffrey Springs. That is a rotation that, on paper, does not immediately require anything from a newly arrived Triple-A arm — but the Hancock situation means the conversation about what comes next in the starting staff is already underway.

What we don't know yet

### Is Hancock going to miss extended time?

The nature and timeline of Hancock's adductor strain remain unclear beyond the report that he left his start over the weekend. No timetable for his return has been reported, and the severity of the injury has not been publicly characterized by the club, per available reporting. That range matters considerably for how much organizational weight Woods Richardson's signing ends up carrying.

The minor league deal's specific terms — including whether it carries an opt-out clause or any invitation provisions — were not detailed in the MLB Trade Rumors report. It is also not yet known whether Woods Richardson's work in the Tacoma rotation could lead to a September call-up. With the expanded 28-man roster now in effect through the end of the regular season under general league rules, Seattle has more roster flexibility than it would have had before September 1 — but whether the organization views him as a candidate for that kind of role has not been reported.

The circumstances of his two waiver trips through the Toronto system this season were not detailed beyond the fact that they occurred. What specifically prompted the Blue Jays to move on from him, and what adjustments if any he has made since leaving Minnesota, remain open questions.

What to watch

The most immediate thing to monitor is the Hancock situation. If the adductor strain keeps him out beyond the current Athletics series, the conversation about Triple-A options — including a newly arrived one — becomes more pressing in a hurry.

Woods Richardson's early work with Tacoma will also be worth tracking for anyone interested in whether the 25-year-old can recapture the form that made him a league-average starter across those 51 appearances in Minnesota. The underlying profile — a former second-round pick with a demonstrated ability to work as a starter — is the kind of thing that keeps organizations interested even when a given season goes sideways.

For the Mariners more broadly, the next few weeks will clarify what this roster is actually building toward. At 66-76 and 5.5 games outside the Wild Card cut line, the competitive calculus is complicated. Signing a reclamation project to a minor league deal is not a statement of intent in either direction — it is just good organizational housekeeping, the sort of move that looks either prescient or forgettable depending entirely on what happens next.