👉 TAP TO SAVE 50% WITH CODE SPRING
X
Lost password?

Don't have an account?
Gain Access Now

X

Receive free daily analysis

NFL
NBA
NHL
NASCAR
CFB
MLB
MMA
PGA
ESPORTS
BETTING

Already have an account? Log In

X

Forgot Password


Mariners on the Rebuild - Fantasy Impact

Sean Scampton breaks down the Seattle Mariners' return from the blockbuster Edwin Diaz and Robinson Cano trade with the New York Mets and explores the implications for the 2019 fantasy baseball season.

Over the weekend, the New York Mets and the Seattle Mariners closed a long-gestating agreement to exchange money, pro talent, and young assets.

The M’s continued their descent into “Tank City” by unloading slugger Robinson Cano and his $120 million contract along with cheap All-Star closer Edwin Diaz in exchange for less expensive but less good slugger Jay Bruce, more expensive and way less-good reliever Anthony Swarzak, outfielder Jarred Kelenic, and pitching prospects Justin Dunn and Gerson Bautista.

That’s a whole lot of movement with a lot of implications to break down, and Rotoballer will be unpacking each angle from a fantasy perspective. Here, we’ll explore players coming to the Mariners, what it means for other Seattle assets, and how this will impact the 2019 season.

Featured Promo: Save 50% the regular price with discount code SPRING, for a limited time. Exclusive access to our Team Sync platform, DFS cheat sheets, Lineup Optimizers, betting/prop picks, and exclusive content from Nick Mariano and Eric Cross! GAIN ACCESS NOW

 

Big Trade, Small Return

Seattle fans are probably bummed, and they probably should be. After all, trade returns for top relievers have been incredible over the last few seasons. Three seasons ago, the Cubs gave up uber-prospect Gleyber Torres for Aroldis Chapman, and Andrew Miller cost the Indians’ two of their top prospects in Clint Frazier and Justus Sheffield. Two seasons ago, David Robertson and Tommy Kahnle were dealt for a package that included Blake Rutherford, then considered a top-30 prospect. Even last year, though returns were down, saw Brad Hand and Adam Cimber netting the Padres catcher Francisco Meija, one of the best catching prospects in the last 20 years. So to say that Diaz, either the best reliever in baseball or number two to Blake Treinen depending on who you talk to, would be dealt along with an aging slugger for two prospects that are maybe at the back end of the top 100 prospects in baseball and financial relief is probably a tough pill to swallow for M’s fans.

The two big leaguers, outfielder Jay Bruce and reliever Anthony Swarzak, are here more as line items on a budget than as clubhouse assets. Swarzak, for example, is almost worthless as a fantasy player thanks to a propensity to having his pitches hit hard and far. The two-year contract that the Mets gave Swarzak was almost immediately a disaster, as the then 32-year-old was paid thanks to a career year in 2017 that saw him generate 2.2 WAR. Of course, he had only generated 1.2 WAR over the first eight seasons of his career, but recency bias is a thing. Sure enough, the Mets expecting a pitcher in his 30s to replicate a career year didn't work out so well, and Swarzak's injury-filled 2018 ended with ghastly 6.15 ERA and a career-worst hard hit percentage of 34.3%. Whatever he had in 2017 was gone, and there is little evidence that it'll return. The Mariners are already going to run out a reliever reclamation project in Juan Nicasio. There's little chance that Swarzak sees high-leverage innings, and thus can be avoided and ignored in all fantasy leagues.

Which brings us to Bruce, the most impactful player coming back to Seattle in terms of the upcoming 2019 season. The 31-year-old is the dictionary definition of a replacement level player, save for a 2017 season which saw him put up a .254/.324/.508 with a career-best 36 home runs. He was a better fantasy player than real one, as anyone that can launch 20-30 home runs per season has a place in lineups. But Bruce is kind of like the Blake Bortles of baseball, good counting numbers despite playing all around bad baseball. He's never been a good hitter, and that distinction came to a head in 2018 when his power abandoned him. An ugly .223/.310/.370 with just nine home runs and a career-worst .147 ISO. As soon as Bruce lost the ability to pop the ball off the bat, he became worthless.

Of course, there's always the chance for the aging veteran to get enough run that he becomes valuable, and it's in this context that Bruce is most interesting. It's way too early for reliable ADP data, but don't expect him to show up on many top 300 lists. He'll either be undrafted or a final round selection in 2019, and with results like he had last season, I can't really argue. But Bruce's fat contract all but guarantees that he'll be a Mariner for the next two seasons, and with Seattle tearing it down to the studs they likely won't be a competitive team in 2019, leaving all of those at-bats to Bruce. In fact, they may try to feature him in hopes of him hitting enough to trade, an unlikely outcome. But despite Bruce's replacement-level reputation, this is a guy who has hit 20+ home runs in eight of his 10 seasons in the bigs. It's unlikely that all of that pop just went away, meaning there is a chance to grab a 20 home run outfielder for almost nothing. You'll want to make sure to use him exclusively as a platoon bat, but if he can produce anything close to his .256/.330/.486 against righties, he could be a real bargain.

 

Seattle's Plan (They Have One, Right?)

But make no mistake, the crux of this deal lies with Seattle’s ability to develop outfielder Jarred Kelenic and starter Justin Dunn. Both players were first-round picks of the Mets from 2018 and 2017, but their lofty draft status covers up less than ideal scouting profiles for both. Kelenic was drafted eighth overall and was considered the most advanced high school bat available. He plays center now, but isn’t likely to stick there long term. Unlike many highly drafted high school bats, however, the 19-year-old lacks the loud tools common among the more exciting prospects in the game. Kelenic’s ceiling is lower, but the feeling is that his floor is high. He’ll very likely be a big leaguer, but just how good of a big leaguer is entirely dependent upon him developing better game power.

As far as 2019 is concerned, the only name to know from the Seattle perspective is Dunn. College relievers tend to move quickly as long as they continue to develop and their stuff plays, and both are true in Dunn’s case. The 23-year-old has a 93-97 mph heater with good movement, two above-average breaking pitches, and a developing but potentially nasty changeup. Some scouts think that three of his pitches, specifically the fastball, changeup, and curveball, could be legitimate out pitches, which gives him a larger repertoire than most relievers. He has strong command of all of his pitches, and he struck out more than 10 batters per nine in 134.4 innings last season across high A and double A. And all that is great, but Dunn may be a better asset for deep keeper and dynasty leagues. Seattle is firmly entrenched in a total teardown and, if Dunn turns out to be a high-value reliever as the Mariners certainly hope, there’s no reason to move start the service time clock earlier than they need to. At this point, Dunn is a name to watch for late 2019 and nothing more.

Unfortunately for M’s fans, a “low-ceiling, high-floor” high schooler and a potential backend reliever are pretty light returns for Diaz, who is under team control for the next four years and will make just $570K in 2019, which is also 16 times what Swarzak will make. Had the Mariners waited until the trade deadline to deal arguably the most valuable reliever in baseball, they might have received a similar haul to what the Cubs sent the Yankees during the 2016 season. If I were an M’s fan, I’d be furious over this deal. Of course, none of that matters for your fantasy team, so I’ll get down off of my soapbox now.

 

Bottom Line

In terms of the fantasy impact for 2019, you can expect many more Mariners to get dealt as the off-season drags on. Shortstop Jean Segura is already expected to be dealt to Philadelphia in exchange for J.P. Crawford and other prospects. Along with catcher Mike Zunino, starting pitcher James Paxton, utility outfielder Guillermo Heredia, reliever Alex Colome, players like Mitch Haniger, Nelson Cruz, Marco Gonzales, Juan Nicasio, Dee Gordon, and perhaps even Felix Hernandez should expect to spend all or parts of 2019 with a different organization.

That leaves a metric ton of holes in the lineup, and you might have heard that Seattle had the worst farm system in baseball before the Diaz deal. With a desire to clear as much salary as possible and no incentive to promote their few good prospects, it is unclear who will be filling all of these vacancies. It is most likely that a mix of inexpensive veterans such as Denard Span or Cameron Maybin, both of whom finished last season in Seattle, and more limited prospects like designated hitter Dan Vogelbach, middle infielder Donnie Walton, and starters Rob Whaley and Max Povse. Expect to see a lot of names that you’ve never heard from getting at-bats.

Of course, this creates an opportunity. Every team that runs out older and less regarded prospects to “see what they have” occasionally runs into a player that becomes genuinely useful in fantasy. Players like Tommy Pham, Jose Pirela, Ryan O’Hearn, and Jake Cave became important contributors on fantasy championship teams over the last few seasons despite receiving little to no buzz when they were called up. Baseball is littered with success stories that scouts never saw coming. Whether or not Seattle will run one of these surprises out and who that will be is anyone’s guess, but you can count of Rotoballer to keep an eye out.




REAL-TIME FANTASY NEWS

Aaron Rodgers

Signs One-Year Deal With Steelers
Blake Snell

to Undergo Elbow Surgery on Tuesday
Clay Holmes

Could Miss Around Three Months
Jose Altuve

Exits After Swing
Corey Seager

Absent With Back Spasms on Saturday
Jeremy Lauzon

Misses Saturday's Practice
Mark Stone

Doesn't Practice Saturday
Josh Manson

Misses Practice, Considered Day-to-Day
Brent Burns

Day-to-Day Ahead of Conference Finals
Cale Makar

Considered Day-to-Day
Alex Lyon

Likely to Start Game 6 Against Canadiens
Owen Power

Available Saturday
Isaac TeSlaa

Can Isaac TeSlaa Carve Out a Larger Role in Detroit Going Forward?
Troy Franklin

Facing Uphill Battle for Playing Time in Denver
Trevor Lawrence

Should Trevor Lawrence Be Valued as a Dynasty QB1?
Courtland Sutton

in Line for Reduced Role in Denver?
KC Concepcion

Can KC Concepcion Immediately Assume the WR1 Role in Cleveland?
George Pickens

' Dynasty Outlook Clouded by Uncertain Future in Dallas
Trevor Story

Hits the Injured List With Groin Injury
Brandon Aiyuk

a Huge Question Mark for Dynasty Managers
Deebo Samuel Sr.

Now Only a Gadget Player/Kick Returner?
Elic Ayomanor

Offseason Additions Hurt Elic Ayomanor's Dynasty Outlook
Tyler Warren

a Clear Top-Five Dynasty Tight End
Jonathon Brooks

a Dynasty RB to Target Despite Injury History?
Blake Snell

Likely to Need Elbow Surgery
Tyler Allgeier

Currently in a Dynasty Buy Window Amid Rollercoaster Offseason
A.J. Brown

Timing Becoming Key to Acquiring A.J. Brown in Dynasty
Quentin Johnston

Is Quentin Johnston on the Verge of a Dynasty Breakout?
Jahmyr Gibbs

Is Jahmyr Gibbs the Dynasty RB1?
Isaiah Likely

The Long-Called-For Isaiah Likely Breakout Could Finally Arrive in 2026
Duncan Robinson

Nets 14 Points With Four Triples
Cade Cunningham

Contributes 21 Points in Game 6 Win
Jalen Duren

Bounces Back With Double-Double
Anthony Edwards

Finishes Season-Ending Loss With 24 Points
Victor Wembanyama

Tallies 19 Points in Friday's Win
De'Aaron Fox

Highly Effective in Blowout Win
Stephon Castle

Shines in Series-Clincher
Kyle Schwarber

on a Heater, Hits Two More Homers to Take Major-League Lead
Clay Holmes

Suffers Fractured Fibula on Friday Night
Blake Snell

Heads to 15-Day Injured List
Austin Reaves

Could Command $40M Per Year With New Contract
Jalen Duren

Available to Finish Game 6
Yanic Konan Niederhauser

Not Expected to Be Ready for Start of Next Season
Jalen Williams

Declares Himself Healthy for Conference Finals
Terrence Shannon Jr.

Will Play Friday Night
Kevin Huerter

is Available for Game 6
Duncan Robinson

is Returning for Game 6
Caris LeVert

is Cleared for Game 6 on Friday
OG Anunoby

Practices in Full on Friday
Terrence Shannon Jr.

is Tagged as Questionable for Friday
Blake Snell

Scratched From Start on Friday for Undisclosed Reasons
Luther Burden III

Does Luther Burden III Have WR1 Dynasty Upside in Chicago?
MarShawn Lloyd

Can MarShawn Lloyd Emerge as a Top Dynasty Handcuff Option?
Emanuel Wilson

Can Emanuel Wilson Carve Out a Consistent Role in Seattle?
Max Fried

Heading to Injured List With Elbow Bone Bruise
Jaylin Noel

Playing-Time Outlook in Houston Remains Unclear
CFB

Julian Sayin Looking To Build Off Of Strong Debut Season
CFB

College GameDay Set for First Three Weeks
CFB

Jeremiah Smith Aiming For Ohio State Receiving Records
CFB

Keshaun Singleton Projects as Auburn's WR1
CFB

Jeremiah Cobb Impresses New Auburn Staff
CFB

Alberto Mendoza Very Likely to Start for Georgia Tech
CFB

Charles Woodson Jr. Commits to Michigan
Jordan Westburg

to Have Season-Ending Elbow Surgery
Melquizael Costa

Set For UFC Vegas 117 Main Event
Arnold Allen

A Favorite At UFC Vegas 117
Daniel Santos

Set For UFC Vegas 117 Co-Main Event
MMA

Dohoo Choi Returns At UFC Vegas 117
Juan Diaz

Set To Make His UFC Debut
Malcolm Wellmaker

Looks To Bounce Back
Christian Edwards

Set For His UFC Debut
Modestas Bukauskas

Looks To Get Back In The Win Column
Tarik Skubal

Resumes Playing Catch, Ahead of Schedule?
Karl-Anthony Towns

Making an Impact as Playmaker in Playoffs
Jalen Duren

Determined to Improve
Kevin Huerter

Tagged as Questionable for Game 6 Against Cavaliers
Caris LeVert

Considered Questionable for Friday
Lane Hutson

Contributes Two Assists in Game 5 Victory
Nick Suzuki

Amasses Three Points in Crucial Victory Thursday
Juraj Slafkovsky

Dishes Out Three Assists in Game 5 Win
Carter Hart

Stops 31 Pucks in Series-Clinching Win
Pavel Dorofeyev

Enjoys Second Consecutive Multi-Goal Game
Shea Theodore

Records Two Points in Game 6 Win
Mitchell Marner

Scores Special Goal in Series-Clincher
Ryan Johnson

Takes Over as Canucks GM, Sedins Promoted to Co-Presidents
Drew Helleson

Won't Play Thursday
Radko Gudas

Unlikely to Play Thursday
Jeremy Lauzon

Remains Out Thursday
Mark Stone

Misses Third Consecutive Game
EDM

Kris Knoblauch Fired as Oilers Head Coach
CFB

Virginia Tech Lands Commitment from Four-Star QB Peter Bourque
Byron Buxton

Scratched on Thursday With Hip Soreness
Cal Raleigh

Heading to Injured List With Oblique Strain
Francisco Alvarez

has Knee Surgery, Expected to Miss Eight Weeks
Quinn Hughes

Finishes Postseason With 15 Points
Cal Raleigh

Exits With Apparent Side Injury on Wednesday Night
Juan Soto

X-Rays Come Back Negative on Juan Soto's Ankle
Jacob Misiorowski

Pulled Early With Possible Leg Injury
Juan Soto

Exits Wednesday's Game Early with Ankle Injury
Pete Fairbanks

Returns From Injured List
CFB

NFL Veteran Tom Moore Joins Iowa Coaching Staff
CFB

Can Cam Cook Dominate in Return to Big 12?
CFB

ACC, Big 12 Support 24-Team College Football Playoff
CFB

Anthony Colandrea Looking to Elevate Nebraska Back to National Contention
CFB

Kwazi Gilmer Set for Big Impact at Nebraska
Justin Thomas

Trending Well Ahead of PGA Championship Despite Concerning Form
J.J. Spaun

Trending Up Ahead of PGA Championship
Adam Scott

Riding Strong Form Into PGA Championship
Patrick Reed

Looking to Make Another Run at PGA Championship
PGA

Sungjae Im Looks to Build on Strong Finish at Truist Championship
Sam Burns

Must Keep Ball in Play at PGA Championship
Jordan Spieth

Looks to Complete Career Grand Slam at Aronimink
Brandt Snedeker

Not the Best Option for the PGA Championship
Rasmus Hojgaard

a Volatile Option at PGA Championship
Maverick McNealy

Seeking Better Start in Philadelphia
Harry Hall

a Boom-or-Bust Option at Aronimink
Hideki Matsuyama

Attempts to Improve Over 2025 PGA Championship
Scottie Scheffler

Looks to Defend PGA Championship at Aronimink
Nicolai Hojgaard

Wants to Keep Momentum Rolling in Philadelphia
Ben Griffin

Attempting to Bounce Back After Truist Championship
CFB

Transfer Defensive Lineman Devarrick Woods Commits to Clemson
Harris English

Will Need His Putter to Thrive at Aronimink
Akshay Bhatia

Creative Flair Could Show Itself in Philadelphia
Keegan Bradley

Knows the Aronimink Golf Club Well
Si Woo Kim

Struggles at Truist Championship
Gary Woodland

Can Continue Incredible 2026 Season at PGA Championship
Xander Schauffele

In Excellent Form Heading to PGA Championship
CFB

Isaac Brown Has All-American Upside in 2026
CFB

Nyck Harbor Heading into Breakout Year?
CFB

Notre Dame, USC in Discussions to Resume Rivalry Series
CFB

Jaron-Keawe Sagapolutele Has Eyes on ACC Title
CFB

Ahmad Hardy's Gunshot Wound Not Viewed as Career-Threatening
Khamzat Chimaev

Suffers his First Loss
Sean Strickland

Recaptures Middleweight Title
Tatsuro Taira

Suffers Fifth-Round TKO Loss
Joshua Van

Defends Flyweight Title
MMA

Waldo Cortes-Acosta Drops Decision
Alexander Volkov

Wins Back-To-Back Fights
Shane Van Gisbergen

Dominates Watkins Glen for First Win of 2026
Michael McDowell

Finishes Second for Best Run of the Year At Watkins Glen
Ty Gibbs

Scores New Career-Best Finish of Third at Watkins Glen
Tyler Reddick

Continues His Strong Season With Fifth-Place Run at Watkins Glen
Austin Dillon

Earns his First Top-10 Finish of 2026 at Watkins Glen
CFB

Ahmad Hardy Sustains Gunshot Wound, in Stable Condition
RANKINGS
C
1B
2B
3B
SS
OF
SP
RP

RANKINGS

QB
RB
WR
TE
K
DEF