The Mariners Mid-Season Master Plan

[Big_Maple]

So here is my analysis of where the Mariners stand about a third of the way through the season -- the good, the bad, and what the M's could do in the coming weeks if their fortunes don't turn around. I'll admit upfront that some of this may be premature. We are only a third of the way in, and these are my initial reactions to what has been a frustratingly lackluster season. The reality is that a few small tweaks, combined with genuine hope that Cal and Brendan return healthy and with something to prove, could change the calculus considerably.

**The Strengths**

Seattle currently boasts the 10th best starting rotation in baseball with a stellar 3.89 ERA, anchored by exceptional frontline stability from Logan Gilbert, George Kirby, and Bryan Woo. On offense, Randy Arozarena is slashing .299 with a .390 OBP, while Luke Raley leads the team with 10 home runs and a .562 slugging percentage. The bullpen has been equally impressive, led by closer Andrés Muñoz, ranking 6th in the majors with an elite 3.17 ERA and further reinforced by the return of Matt Brash. Adding the right veteran arm would completely bridge the high-leverage gap to Muñoz.

**The Weaknesses**

The DH/backup catcher situation is a real problem. Mitch Garver is slumping well below the Mendoza line with a disappointing .638 OPS, and Rob Refsnyder has stalled out and failed to provide the offensive depth he was signed to deliver. There's also clubhouse friction worth noting: frontline starters are increasingly venting frustration over the team's six-man approach and piggyback roles. Sadly, there is not much we can do about Garver - backup catchers don't grow on trees, and anything we would trade for (realistically) would be as bad or worse than Garver. We just stay the course with him until Cal gets back, and hope like hell Cal figures his swing out again.

**Who's Cruising, Who's Bruising**

Randy Arozarena (.856 OPS), Luke Raley (10 HR), and Julio Rodríguez (.261, 8 HR, 21 RBIs) continue to carry the heavy load. On the other side, Cal Raleigh was enduring a brutal slump, sitting at .161, before landing on the 10-day IL on May 14 with a Grade 1 right oblique strain. Both he and Brendan Donovan are worth watching as turnaround candidates. Raleigh is progressing with light baseball activity, and a mental and physical reset ahead of an anticipated June return could spark his bat. Donovan, sidelined with a left groin strain, received a PRP injection and is targeting an early June return to baseball activities as well.

**The Proposed Strategic Pivot: Rotation Stability and Offensive Spark**

We are at a crossroads. Rather than forcing lopsided trades for our starters, we have the internal and trade-market flexibility to fix our weaknesses without gutting our future.

*Transition to a Performance-Based "5+1" Rotation.* The current six-man rotation is stifling our starters' rhythm and creating unnecessary logjams. The fix is a primary five-man rotation with the sixth roster spot functioning as a "bridge" arm, a high-leverage long reliever who provides essential length for the bullpen and stays stretched out to cover spot starts or injuries. Emerson Hancock is the ideal candidate for this role. With a 3.07 ERA and 60 strikeouts in 58.2 innings this season, he has earned his place in the mix, and this arrangement keeps Gilbert, Kirby, Woo, Miller, and Castillo on their preferred schedule. More importantly, it creates a true meritocracy: if any member of the primary five struggles or shows fatigue, the bridge arm is ready to step in without the inefficiency of a rigid six-man rotation that leaves the bullpen short-handed -- and hopefully this puts to rest the frustration our starters have been feeling about the piggyback situation once and for all.

*Acquire Antonio Senzatela from the Rockies.* Senzatela has been excellent (elite?) out of the bullpen in 2026, posting a 1.13 ERA and 0.78 WHIP through roughly 32 innings, and would be a strong veteran addition for high-leverage or multi-inning work behind Muñoz and Brash.

**The Proposed Deal**
**Mariners receive:** RHP Antonio Senzatela
**Rockies receive:** RHP Teddy McGraw · OF Korbyn Dickerson · ~$2-3M cash

The Rockies are in full rebuild mode, this lets them shed salary and acquire mid-tier prospects with upside, and it gives Seattle immediate bullpen depth without surrendering elite prospect capital. The main downside is absorbing most of his ~$12M salary and some injury history, but it's a short-term rental with a club option for 2027, and this feels like a very realistic mid-season deal the Mariners could actually pull off. To clear a roster spot, we DFA Alex Hoppe and don't look back.

*Promote Brock Rodden.* The DH platoon production is no longer sustainable. Rodden is mashing in the Pacific Coast League, his power-contact profile, switch-hitting flexibility, and recent power surge are exactly the thump the lineup needs. Promote him to the active 26-man roster immediately. To clear the spot, we DFA Rob Refsnyder, eat his contract, and move on. He's been a liability all season and that roster spot needs to go to someone who can actually contribute to a postseason run.

**The Bottom Line**

None of this needs to be drastic. A tweaked rotation structure, one realistic trade, and a promotion that is already overdue -- that's it. If Cal comes back locked in and Brendan returns healthy, this team looks considerably different in June than it does right now. The pitching is real, the core of the lineup is real, and the bullpen is close to where it needs to be. Let's make the small moves that give this roster a legitimate chance to find out what it actually is.

[Double Mocha Man]

That all sounds good except maybe the Antonio Senzatela thing. He has a career ERA of 5.03 over about 10 years, all with Colorado. Do you know what he is doing different this year?

[D-train]

That all sounds good except maybe the Antonio Senzatela thing. He has a career ERA of 5.03 over about 10 years, all with Colorado. Do you know what he is doing different this year?

And Rodden was just put on the IL. Also not sure I would call his .263/.761 in the PCL mashing.

btw Luke hit his 11th HR last night and of course he is benched for Vic Robles who has a career .686 OPS vs Lefty starters.

[Big_Maple]

That all sounds good except maybe the Antonio Senzatela thing. He has a career ERA of 5.03 over about 10 years, all with Colorado. Do you know what he is doing different this year?

He did struggle as a starter especially after coming back from Tommy John. But he has completely revitalized his career this season with a permanent move to the Colorado Rockies' bullpen.

He has been lights out in his new high-leverage and multi-inning relief role, anchoring the late innings with dialed-up velocity (97 mph). Through 15 appearances, Senzatela boasts a flawless 4-0 record, a microscopic 1.13 ERA, a lethal 0.78 WHIP, and 3 saves over 32 innings pitched

[Peepaw]

So here is my analysis of where the Mariners stand about a third of the way through the season -- the good, the bad, and what the M's could do in the coming weeks if their fortunes don't turn around. I'll admit upfront that some of this may be premature. We are only a third of the way in, and these are my initial reactions to what has been a frustratingly lackluster season. The reality is that a few small tweaks, combined with genuine hope that Cal and Brendan return healthy and with something to prove, could change the calculus considerably.

**The Strengths**

Seattle currently boasts the 10th best starting rotation in baseball with a stellar 3.89 ERA, anchored by exceptional frontline stability from Logan Gilbert, George Kirby, and Bryan Woo. On offense, Randy Arozarena is slashing .299 with a .390 OBP, while Luke Raley leads the team with 10 home runs and a .562 slugging percentage. The bullpen has been equally impressive, led by closer Andrés Muñoz, ranking 6th in the majors with an elite 3.17 ERA and further reinforced by the return of Matt Brash. Adding the right veteran arm would completely bridge the high-leverage gap to Muñoz.

**The Weaknesses**

The DH/backup catcher situation is a real problem. Mitch Garver is slumping well below the Mendoza line with a disappointing .638 OPS, and Rob Refsnyder has stalled out and failed to provide the offensive depth he was signed to deliver. There's also clubhouse friction worth noting: frontline starters are increasingly venting frustration over the team's six-man approach and piggyback roles. Sadly, there is not much we can do about Garver - backup catchers don't grow on trees, and anything we would trade for (realistically) would be as bad or worse than Garver. We just stay the course with him until Cal gets back, and hope like hell Cal figures his swing out again.

**Who's Cruising, Who's Bruising**

Randy Arozarena (.856 OPS), Luke Raley (10 HR), and Julio Rodríguez (.261, 8 HR, 21 RBIs) continue to carry the heavy load. On the other side, Cal Raleigh was enduring a brutal slump, sitting at .161, before landing on the 10-day IL on May 14 with a Grade 1 right oblique strain. Both he and Brendan Donovan are worth watching as turnaround candidates. Raleigh is progressing with light baseball activity, and a mental and physical reset ahead of an anticipated June return could spark his bat. Donovan, sidelined with a left groin strain, received a PRP injection and is targeting an early June return to baseball activities as well.

**The Proposed Strategic Pivot: Rotation Stability and Offensive Spark**

We are at a crossroads. Rather than forcing lopsided trades for our starters, we have the internal and trade-market flexibility to fix our weaknesses without gutting our future.

*Transition to a Performance-Based "5+1" Rotation.* The current six-man rotation is stifling our starters' rhythm and creating unnecessary logjams. The fix is a primary five-man rotation with the sixth roster spot functioning as a "bridge" arm, a high-leverage long reliever who provides essential length for the bullpen and stays stretched out to cover spot starts or injuries. Emerson Hancock is the ideal candidate for this role. With a 3.07 ERA and 60 strikeouts in 58.2 innings this season, he has earned his place in the mix, and this arrangement keeps Gilbert, Kirby, Woo, Miller, and Castillo on their preferred schedule. More importantly, it creates a true meritocracy: if any member of the primary five struggles or shows fatigue, the bridge arm is ready to step in without the inefficiency of a rigid six-man rotation that leaves the bullpen short-handed -- and hopefully this puts to rest the frustration our starters have been feeling about the piggyback situation once and for all.

*Acquire Antonio Senzatela from the Rockies.* Senzatela has been excellent (elite?) out of the bullpen in 2026, posting a 1.13 ERA and 0.78 WHIP through roughly 32 innings, and would be a strong veteran addition for high-leverage or multi-inning work behind Muñoz and Brash.

**The Proposed Deal**
**Mariners receive:** RHP Antonio Senzatela
**Rockies receive:** RHP Teddy McGraw · OF Korbyn Dickerson · ~$2-3M cash

The Rockies are in full rebuild mode, this lets them shed salary and acquire mid-tier prospects with upside, and it gives Seattle immediate bullpen depth without surrendering elite prospect capital. The main downside is absorbing most of his ~$12M salary and some injury history, but it's a short-term rental with a club option for 2027, and this feels like a very realistic mid-season deal the Mariners could actually pull off. To clear a roster spot, we DFA Alex Hoppe and don't look back.

*Promote Brock Rodden.* The DH platoon production is no longer sustainable. Rodden is mashing in the Pacific Coast League, his power-contact profile, switch-hitting flexibility, and recent power surge are exactly the thump the lineup needs. Promote him to the active 26-man roster immediately. To clear the spot, we DFA Rob Refsnyder, eat his contract, and move on. He's been a liability all season and that roster spot needs to go to someone who can actually contribute to a postseason run.

**The Bottom Line**

None of this needs to be drastic. A tweaked rotation structure, one realistic trade, and a promotion that is already overdue -- that's it. If Cal comes back locked in and Brendan returns healthy, this team looks considerably different in June than it does right now. The pitching is real, the core of the lineup is real, and the bullpen is close to where it needs to be. Let's make the small moves that give this roster a legitimate chance to find out what it actually is.

Can't agree with the rotation you suggest. It's not that Hancock shouldn't be "punished" with a subservient role, it's that he's pitching so fine as a bona fide starter and we need his innings. Long relievers can be found, but don't waste Hancock on that. Get over Castillo. The team should trade him for offensive WAR.

Most urgent problem, agreed, is the RF platoon sit which is an unmitigated disaster and needs immediate correction as in - strategy shift. It's not just a weakness, it's capitulation. Look what the A's just did, throwing any ol' lefty at us and getting the expected lineup of our failed platooners. Their stooge won't last long, but we'll be stuck with shit for offense.

One more (good) arm for the BP, maybe, but our starters can go long enough. We need offense to displace the RF/DH platoon forevermore. Flush that strategy.

[D-train]

That all sounds good except maybe the Antonio Senzatela thing. He has a career ERA of 5.03 over about 10 years, all with Colorado. Do you know what he is doing different this year?

He did struggle as a starter especially after coming back from Tommy John. But he has completely revitalized his career this season with a permanent move to the Colorado Rockies' bullpen.

He has been lights out in his new high-leverage and multi-inning relief role, anchoring the late innings with dialed-up velocity (97 mph). Through 15 appearances, Senzatela boasts a flawless 4-0 record, a microscopic 1.13 ERA, a lethal 0.78 WHIP, and 3 saves over 32 innings pitched

I would be totally down with Senzatela. And given he makes $12M a season his trade value is about zero so we could get him for a 3rd tier prospect like Labrada. Just depends if Jerry wants to spend $4-5M on 2-2.5 months a reliever....

[Big_Maple]

Can't agree with the rotation you suggest. It's not that Hancock shouldn't be "punished" with a subservient role, it's that he's pitching so fine as a bona fide starter and we need his innings. Long relievers can be found, but don't waste Hancock on that. Get over Castillo. The team should trade him for offensive WAR.

Agreed. But I am not punishing him. He makes the most sense.

Despite Castillo's heavy struggles (5.90 ERA), his massive veteran contract makes moving him permanently to a +1 long-relief role an organizational headache. Keeping him as a traditional starter forces him to work through his issues on a set schedule.

Also, I am over Castillo. I thought they should have traded him years ago. He is off to one of the worst starts to his career, even though his last start showed a glimmer of hope. His velo is down. His changeup, which used to be elite, is just ‘meh’, and he doesn’t throw it much anymore. He’s expensive. He has another year on his contract. And as D-Train’s father points out, he’s weirdly obsessed with his hair.

For all of these reasons, he’s untradeable, even if the M’s ate a lot of his contract (which they won’t). I spent hours today going through trade scenarios for Castillo, and I reached the conclusion that no one would take him - certainly not for the return we’d want.

So of the guys who could be a “+1”, Emerson fits the profile best. IMHO.

[D-train]

Can't agree with the rotation you suggest. It's not that Hancock shouldn't be "punished" with a subservient role, it's that he's pitching so fine as a bona fide starter and we need his innings. Long relievers can be found, but don't waste Hancock on that. Get over Castillo. The team should trade him for offensive WAR.

Agreed. But I am not punishing him. He makes the most sense.

Despite Castillo's heavy struggles (5.90 ERA), his massive veteran contract makes moving him permanently to a +1 long-relief role an organizational headache. Keeping him as a traditional starter forces him to work through his issues on a set schedule.

Also, I am over Castillo. I thought they should have traded him years ago. He is off to one of the worst starts to his career, even though his last start showed a glimmer of hope. His velo is down. His changeup, which used to be elite, is just ‘meh’, and he doesn’t throw it much anymore. He’s expensive. He has another year on his contract. And as D-Train’s father points out, he’s weirdly obsessed with his hair.

For all of these reasons, he’s untradeable, even if the M’s ate a lot of his contract (which they won’t). I spent hours today going through trade scenarios for Castillo, and I reached the conclusion that no one would take him - certainly not for the return we’d want.

So of the guys who could be a “+1”, Emerson fits the profile best. IMHO.

[Seattle or Bust]

Can't agree with the rotation you suggest. It's not that Hancock shouldn't be "punished" with a subservient role, it's that he's pitching so fine as a bona fide starter and we need his innings. Long relievers can be found, but don't waste Hancock on that. Get over Castillo. The team should trade him for offensive WAR.

Agreed. But I am not punishing him. He makes the most sense.

Despite Castillo's heavy struggles (5.90 ERA), his massive veteran contract makes moving him permanently to a +1 long-relief role an organizational headache. Keeping him as a traditional starter forces him to work through his issues on a set schedule.

Also, I am over Castillo. I thought they should have traded him years ago. He is off to one of the worst starts to his career, even though his last start showed a glimmer of hope. His velo is down. His changeup, which used to be elite, is just ‘meh’, and he doesn’t throw it much anymore. He’s expensive. He has another year on his contract. And as D-Train’s father points out, he’s weirdly obsessed with his hair.

For all of these reasons, he’s untradeable, even if the M’s ate a lot of his contract (which they won’t). I spent hours today going through trade scenarios for Castillo, and I reached the conclusion that no one would take him - certainly not for the return we’d want.

So of the guys who could be a “+1”, Emerson fits the profile best. IMHO.

Re the bold: Yeah at the expense of losses...

Why Brock Rodden? A .761 OPS in AAA is mashing? He's also an infielder. The M's have plenty of those to go around... especially when Donovan returns. Brennan Davis is the clear solution to DFAing Refsnyder as he's a right handed outfielder who crushes lefties.

Castillo is tradeable if they eat money. If not, just move him to the bullpen. I don't see why that's such a challenge for people to think about. The irony in this is that the reliever you're proposing the M's trade for was the worst starter in baseball last year. Who says Castillo can't find some value as a reliever that can go a couple of innings?

Senzatela is fine... but why would the M's be sending the Rockies money in this case? He's pitching well, but he's also making $12M this year.

If they are in contention at the break... it would seem very silly to not go out and trade for a very good right handed bat.

[Big_Maple]

Screenshot 2026-05-24 161652.png

Of course I would do that in a heartbeat.

But because it works in an algorithm doesn’t mean it would in reality. There is zero probability of tjat trade working and slightly less than zero that any trade involving Castillo would work, even if you toss in prospects and ate half his contract.

Mariners management doesn’t work like that.

But damn, I’d love Yordan.