
RP · Mariners
Grade Josh Simpson
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On the field, Josh Simpson grades out as a poor RP for Mariners (F Performance). That places him 370th of 389 graded relief pitchers. The public read is negative (D Sentiment), drawn from current news and social signal rather than the box score.
| Year | Team | GP | ERA | W-L | K | WHIP | IP | SV |
|---|---|---|---|---|---|---|---|---|
| Career | ![]() | 34 | 7.3636365 | 4-2 | 39 | 1.7878788 | 0.0 | 0 |
| 2026 | ![]() | 3 | 7.71 | 0-0 | 3 | 1.29 | 2.1 | 0 |
| 2025 | ![]() | 31 | 7.34 |
Josh Simpson is firmly in replacement-level territory among left-handed relievers, and his F performance grade reflects a reliever who has yet to carve out a dependable big-league role. The data provides no statistical strengths to hang a narrative on — there are no benchmarks here that distinguish him from organizational depth, which itself tells a significant story. His most glaring weakness is his inability to hold a permanent roster spot, as his current shuttle pattern between Seattle and Triple-A Tacoma speaks to a pitcher still fighting for legitimacy rather than building on a foothold. Simpson arrived via acquisition from the Miami Marlins, a transaction that generated virtually no buzz, and his profile is defined more by organizational need than earned opportunity. His rookie scale contract keeps him a low-cost option, but low-cost and low-production is not a combination that inspires confidence with the Mariners sitting at 16-18 and in need of reliable bullpen arms. The most honest read on Simpson right now is that of a depth piece being tested by circumstance — Matt Brash's placement on the injured list created the opening that brought him back up, and that context underscores the transactional nature of his big-league presence. Until he produces the kind of consistent results that make roster decisions about him a deliberate choice rather than a default one, he remains a name to monitor rather than a name to trust.
Josh Simpson ranks 370th of 389 graded relief pitchers by performance. That slots Josh between Burch Smith (F) just ahead and Connor Seabold (F) just behind.
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Josh Simpson is a player on the Mariners roster listed at RP for the Mariners. FanVerdicts covers every MLB player, team, GM, and transaction — and puts your verdict on all of it. Sign in to cast your Fan Verdict on Josh Simpson, see where the crowd lands, and argue the call. FanVerdicts also brings its own read — performance, sentiment, and Contract Value Index — as one honest input alongside the crowd's. Where FanVerdicts has weighed in so far: Performance F, Sentiment D.
The crowd's Fan Verdict moves in real time as fans vote on this profile. FanVerdicts' own read updates as new data lands — performance recalculates when MLB game stats post, sentiment shifts with media coverage and fan discussion, and the Contract Value Index recomputes when contract terms change.
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| 4-2 |
| 36 |
| 1.83 |
| 30.2 |
| 0 |
Josh Simpson's public profile sits at the low end of the spectrum — a fringe reliever who barely registers a blip on the broader baseball radar, and right now that anonymity is doing him no favors. The narrative driving his perception is almost entirely defined by organizational utility: he was acquired from Miami with minimal fanfare, slotting in as a left-handed depth piece rather than a targeted bullpen upgrade, and the shuttle pattern between Triple-A Tacoma and the big league roster has cemented his image as a reliever still searching for a permanent foothold. That perception lines up cleanly with his on-field production, which has done nothing to generate buzz or force the conversation — there are no signature moments, no high-leverage performances, no statistical benchmarks that would separate him from the long list of replacement-level arms cycling through MLB bullpens on a given week. The Mariners' recent flurry of roster activity — adding Brendan Donovan, Rhylan Thomas, Nick Davila, and Will Wilson in rapid succession — only reinforces the sense that Seattle is actively tinkering with its depth rather than relying on any one piece, and Simpson's recall and option back to Tacoma within days reflects exactly how tenuous his grip on a roster spot is. The narrative around Simpson right now is not hostile, but indifference is its own verdict — and until he strings together consistent results in a Mariners bullpen that is clearly still being constructed around him, there is no realistic path to shifting the conversation in his direction.
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