Justin Hollander breaks down just how good the Mariners’ pitching depth is

Mar 24, 2023, 4:19 PM

Mariners pitching...

Luis Castillo of the Seattle Mariners celebrates with Andres Munoz on Oct. 7, 2022. (Mark Blinch/Getty Images)

(Mark Blinch/Getty Images)

The Mariners wouldn’t have won 90 games in back-to-back years if not for their pitching, which has been the team’s strength over the past two seasons.

Drayer: Mariners fireballer Andrés Muñoz brings more than just new pitch into ’23

Some starting rotation rankings don’t have the Mariners in the top 10, but general manager Justin Hollander doesn’t think that’s the case at all.

“I have to think it’s being underestimated,” he told Seattle Sports’ Wyman and Bob on Friday. “I don’t count us as the 18th or 16th or 15th best rotation and baseball. We’ll see how it goes at the end of the year. But I think we’re elite. That’s that’s how I view our rotation. We have a 1-5, a 1-6 or if you want to go a 1-10 or as good as anybody, in my opinion.”

That depth is especially what’s notable for the Mariners heading into the season.

The Mariners’ five-man rotation is set, with Luis Castillo leading the charge alongside Robbie Ray, Logan Gilbert, Marco Gonzales and George Kirby. Seattle also has an established MLB starter in the mix in Chris Flexen, giving the M’s some great depth at the MLB level.

But it doesn’t stop after those six, as the Mariners have a handful of promising young pitchers who are knocking on the MLB door.

The Mariners have five top pitching prospects who could all very well debut this season: Bryce Miller, Prelander Berroa, Emerson Hancock, Taylor Dollard and Bryan Woo. The team’s young pitching prospects have certainly turned heads at camp this spring.

Hollander called that group of young pitchers a “pleasant thought to have.”

“Whether it’s Prelander Berroa lighting everybody up on the first live BP, seeing a healthy and confident Emerson Hancock, watching Bryce Miller go out and show elite stuff outing after outing, and then seeing how far Bryan Woo has come in just a very short time. That’s a really talented group,” Hollander said. “And to know that we have the starting rotation that we have and the group behind them, that lets me sleep well at night, because you can never have enough depth.”

The Mariners’ pitching depth really wasn’t put to the test last year as no starting pitcher missed a single start. That level of health is nearly unprecendented, and it’s not something Hollander or the M’s front office is counting on in 2023.

“Obviously, last year, we didn’t miss any starts due to injury. I don’t want to promise that’s not going to happen – I hope that happens again, but it seems unlikely that it will – and knowing the group behind them is really ready to go and equipped to help us at some point in the big leagues this year is really exciting for us,” he said.

On top of that excellent rotation is a bullpen that has been one of the best in baseball the last two years.

Andrés Muñoz and Paul Sewald are back as Seattle’s two key leverage arms, while Matt Brash is seen as a breakout candidate. Additionally, the M’s have Diego Castillo, Matt Festa and Penn Murfee all returning, too.

“I feel really good. This is the best, deepest group we’ve had in a long time,” Hollander said of the Mariners’ bullpen. “And we’ve had two groups over the last few years, but this group is going to be really good. It’s really talented … it’s a really good group. We feel really confident.”

And like with the Mariners’ rotation, the bullpen has a lot of talented arms, even if some of those pitchers may not break camp with the MLB team.

“Guys like Gabe Speier and Justin Topa, guys that we acquired in the offseason, those guys have really shown out this spring,” Hollander said. “Really, really happy with our depth.”

5 Mariners make ESPN’s MLB top 100 — how do they compare to Astros?

Wyman & Bob

Mariners Roof Report

Brought to you by
Partly Sunny
High 68° | Low 49°
Roof is open
Cubs at Mariners today at 6:40pm

Wyman and Bob


Seattle Sports Video

Video: Seattle Seahawks RB Zach Charbonnet on the tight-knight Running Back room

Where does Seattle Seahawks RB Zach Charbonnet’s mentality originate? How tight-knit is the RB room on this team? He joined Bob Stelton and Dave Wyman to talk about his off-season and the experience from the first set of practices this season. What does he think he can add to this Seahawks offense this season? What […]

20 hours ago


Seattle Sports Video

Video: Seahawks DT Byron Murphy II on why he grew up a Seahawks fan, adjusting to life in the NFL

What did the rookie Seattle Seahawks DT Byron Murphy II have to say about what it was like to get drafted at pick #16 in NFL Draft? What does he think he can bring to this Seahawks Defense? Why did he grow up a Seahawks fan? He joined Dave Wyman and Bob Stelton to talk […]

1 day ago


Seattle Sports Video

Video: The impact that Leslie Frazier has had on the Seattle Seahawks coaching staff

What is the impact that Leslie Frazier has had on the Seattle Seahawks coaching staff? What will he bring to that Seahawks locker room? Dave Wyman and Bob Stelton discuss that and what type of coach Macdonald and the Seahawks are getting. What will he look like in his role in Seattle? Watch a snippet […]

3 days ago

Seattle Seahawks Geno Smith Titans 2023...

Cameron Van Til

ESPN’s Adam Schefter sizes up Seahawks’ QB situation

ESPN NFL insider Adam Schefter weighed in on Seattle Seahawks quarterbacks Geno Smith and Sam Howell during an appearance on Wyman and Bob.

7 days ago

Seattle Mariners trade target...

Bob Stelton

Bob’s Baseball Breakdown: Would Bob go all-in on Mariners trade?

Seattle Sports Wyman and Bob co-host Bob Stelton weighs in on the big issues and storylines around the Seattle Mariners.

7 days ago


Seattle Sports Video

Video: How much is Bob willing to deal in any Mariners trades? Bob’s Baseball Breakdown for 6-6-24

Bob Stelton of Seattle Sports’ Wyman and Bob breaks down the state of the Seattle Mariners. What did he see this week? How much is Bob willing to deal in any Mariners trades? This week, Bob answers: – How long can this team continue to win series like they have recently? – How much is […]

7 days ago

Justin Hollander breaks down just how good the Mariners’ pitching depth is