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Fantasy Baseball Rookie Risers/Fallers (Week 17)

Jon Denzler reflects on fantasy baseball prospects and rookie debuts from last week, including prospect stocks that are rising and falling for fantasy owners.

Well, the Major League season is already 47% of the way done. Some owners think that they are on their way to victory while others are patiently waiting for things to turn around. Still, while all the victory laps are being taken, the smart owner is looking forward to the rest of the year and finding what value can still be had. While the season always seems to move quickly, the dog days of summer are still upon us.

Now that we are rolling along, so too are the call-ups. This week, the Rotoballer team keeps tabs on all the new names and faces, with insight into their fantasy value to help any team. For owners looking for a cheap spark, look no further.

For redraft, dynasty, or general fantasy players knowing the new prospects is key to begin to plan out FAAB bids and waiver claims. Target or avoid these players to helps teams keep their competitive windows open.

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Rookie Debuts - Stock Up

These players helped their fantasy value with solid debut weeks for their respective team. If not on owners's radars, these players need to be.

Michael Baez (SP, SD)

Season line: Two games, two innings, two Ks

The Padres are going to be an exciting team to watch the rest of the way, as the front office clearly does not care about service time or age when looking at talent. With Fernando Tatis Jr. and Luis Urias already playing every day, the next wave of prospects is going to come on the mound. With Baez, the team has an upside arm, but a player who only signed before 2017. Debuting at 23 means there is still a literal decade of development time ahead to push this value up even more. While there are always questions regarding the durability of young arms, with the stuff that these prospects can offer, they are going to be hard to hit even to start their careers.

Baez seems set in the bullpen, with two appearances on a single inning so far. He did strike out a batter in each outing and has only walked one. What set Baez apart is the pitch-mix. Typically a reliever will have two offerings, with the best, having one other offering they can throw when needed. Baez has a fastball, curveball, slider, and change that he can throw, will all four pitches grading out as a 50 floor. Expect him to widdle this down to three for the time being, but with that type of arsenal, and mid-90s velocity, this is a stock with fantasy impact.

 

Rookie Debuts - Stock Down

These players hurt their fantasy value during their first week of play.

Zach Green (3B, SFG)

Season line: Two games, five ABs, two hits

A former third-round draft pick by Philadelphia, Green was added this past week as cover for Evan Longoria. Entering the year via a minor-league invite to spring training, and not being listed on any prospect lists, Green is a pop-up option for fantasy owners. Through 64 games at Triple-A Sacramento this campaign, Green was slashing .303/.402/.689. Add in 23 homers with 39 runs scored, and Green has played like the top prospect he was never considered.

In terms of this staying time with the team, there is not much of a path for playing time. While Green did start in the first game up with the team, he has yet to make another appearance. Green does have two fits in his first five plate appearances, but he is not getting the run of a player whom the team thinks will be with them the rest of the way. While there is some new interest in dynasty leagues with the hot year, with this being his first productive year the plate, redraft owners should not take a flier until he starts to play more often.

 

Tim Lopes (2B, SEA)

Season line: two games, one AB, two runs, one walk

Drafted in the sixth round of the 2012 Amateur Draft, Lopes offers another name who did not begin the year with any prospect hype. Still only 25, Lopes has taken his time to get to the Bigs but is still well within the range for fantasy players to take a look. In 91 games at Triple-A Tacoma, Lopes was slashing .302/.362/.480 before his call. With a career .277 batting line, Lopes has been an excellent bat-to-ball hitter, but with a career .382 slugging line has not been able to show much pop.

No hits in his first few games, but Lopes did manage to score twice of a walk and hit-by-pitch. Owners should expect him to keep playing scrappy, with runs and RBIs that the profile will not support, but also a clear ceiling on even that value. With news that he will be heading to the Injured List with a concussion, owners should stay away. Still, if Dee Gordon is dealt, then Lopes might be the next man up. In that case, he is a .270 MI starter, with some risk of scrappy leading to value.

 

Adrian Morejon (SP/RP, SD)

Season line: 3.1 innings pitched, two Ks, one earned run allowd

Signed out of Cuba before the 2016 season, Morejon has always been ap layer with some hype, but questions on how quickly he would move. Still only 20 at the time of his debut, Morejon has impressed with his plus stuff. Always, walks have been a concern with 55 in 164 total innings of work. If that can stay in the 3.0-3.5 K/9 range, then the stuff and length are there for him to project as an SP3 with some rise for 2020 and beyond.

When his best offerings are the fastball-curveball combo, it makes sense that he looks to set into a role in the pen for the time being. Through his first 3.1 innings of work, Morejon has struck out two batters and walked none. While there have been four homers, this is also too small a sample size to read either way. With the skills to pitch in the Bigs, but a bullpen role capping his value, the stock is down for now. If he gets a spot start, this is the type of arm that owners should throw FAAB at in redraft formats.

 

More MLB Prospects Analysis




REAL-TIME FANTASY NEWS

Joel Embiid

Considered Probable for Sunday's Elimination Game
Jarred Vanderbilt

Active on Saturday Night
Logan Webb

is Placed on 15-Day Injured List
NHL

Blackhawks Bring in Roman Kantserov for Next Season
Mason McTavish

Set to Rejoin Ducks Lineup Sunday
Lukas Dostal

to Remain in Ducks Crease Sunday
Zach Bogosian

Back for Wild Saturday
Jesper Wallstedt

Starting Game 3 Against Avalanche
Joel Eriksson Ek

Not Ready to Return Saturday
Owen Tippett

Won't Play Saturday
Cooper Kupp

a Dynasty Hold into the Start of 2026 Season
Jaylen Warren

a Safe Dynasty Depth Piece with Insurance Upside
Christian McCaffrey

a Risky Dynasty Hold Who Still Exceeds His Trade Value
Brian Thomas Jr.

A Risky Buy-Low with Immense Upside
NFL

Tre' Harris a Dynasty Hold That Could Require Patience
Braelon Allen

Dynasty Stock Takes a Hit After Teammate's Extension
Josh Allen

Still the Top Dynasty QB in his Prime
Kyler Murray

Suddenly a Rising Dynasty Target in Minnesota
Logan Webb

on Track to Start Against Dodgers on Monday
Mike Matheson

Leads by Example in Game 2 Win
Jakub Dobes

Rebounds After Loss Yet Again for Montreal
Rachaad White

Undervalued in Dynasty Leagues Despite a Path to Upside
Alex Newhook

Sets Tone in Big Montreal Victory
Stephon Castle

Overcomes Shooting Struggles Friday
Jake Tonges

Should by Now Be Rostered by Every Kittle Dynasty Manager
Anthony Edwards

Carries Heavy Usage in Defeat
Chig Okonkwo

a Clear Breakout Candidate in Washington
Lukas Dostal

Gets Pulled in Game 3 Loss on Friday
Victor Wembanyama

Joins Historic Playoff Company
Mikal Bridges

Continues Postseason Surge with 23-Point Game
Aaron Jones Sr.

Still a Low-Cost, Short-Term Dynasty Target
Kelly Oubre Jr.

Keeps Scoring Role Alive
Romeo Doubs

' Buy Window Could Soon Be Wide Open
Joel Embiid

Held to 18 Points in 76ers Game 3 Loss
Brett Howden

Notches Sixth Goal of the Postseason
Jalen Brunson

Tallies 33 Points to Take 3-0 Series Lead
VEG

Mitch Marner Hat Trick Helps Vegas Take Series Lead
Pat Bryant

Working With Training Staff This Offseason
Jacoby Brissett

in Communication With Cardinals Despite Skipping Workouts
Daniel Jones

Could Take Part in 7-on-7 Drills at OTAs
Tyler Glasnow

Dodgers Put Tyler Glasnow on Injured List With Back Spasms
Sam Merrill

Iffy for Game 3 on Saturday
Anthony Edwards

Rejoins Starting Lineup Friday
Kevin Huerter

Likely to Remain Out Saturday
Jarred Vanderbilt

Considered Questionable for Saturday
Jalen Williams

Ruled Out for Game 3 Against Lakers
Ayo Dosunmu

Cleared to Play Friday
Anthony Edwards

Available Friday Night
Joel Embiid

is Returning for Game 3 on Friday
Brandon Ingram

Undergoes Heel Surgery
Josh Hart

is Available to Play in Game 3
OG Anunoby

is Downgraded to Out for Game 3 on Friday
Mitchell Robinson

is Returning for Game 3
Mats Zuccarello

Expected to Play Saturday
Joel Eriksson Ek

to Be a Game-Time Decision Saturday
Jonas Brodin

Still Out Saturday
Josh Manson

Could Return Saturday
Kaedan Korczak

Scratched for Game 3 Against Ducks
Radko Gudas

Likely to Remain Out Friday
Sam Carrick

Won't Play Friday
Isiah Pacheco

Can Isiah Pacheco Re-Establish His Dynasty Value in Detroit?
Rico Dowdle

Dynasty Ceiling Limited By Backfield Committee in Pittsburgh
Rashid Shaheed

a High-Risk, High-Reward Buy-Low Candidate for Dynasty Managers
Marcus Mariota

Is Marcus Mariota Worth Stashing as an Injury Replacement in Dynasty Leagues?
Jacoby Brissett

a Clear Sell-High Candidate for Dynasty Managers
Blake Snell

to Make Season Debut for Dodgers on Saturday
Cole Ragans

Royals Place Cole Ragans on Injured List With Elbow Impingement
Sean Strickland

An Underdog At UFC 328
Khamzat Chimaev

Set For UFC 328 Main Event
Tatsuro Taira

Can Become The New Flyweight Champion
Joshua Van

Set For His First Title Defense
Alexander Volkov

Looks To Win Back-To-Back Fights
MMA

Waldo Cortes-Acosta Looks To Extend His Win Streak
Nick Lodolo

Officially Activated, Making Season Debut on Friday
CFB

Walker Lyons Could be Go-To Target for Bear Bachmeier
CFB

Ty Benefield a Potential Game-Changer for LSU Defense
CFB

Hayden Lowe Set for Significant Role Following Miami's NFL Departures
CFB

Taylor Wein in Position for Big Season on Oklahoma's Defensive Line
CFB

Rasheem Biles an Instant Impact Player for Texas
Dan Vladar

Looks to Return to Winning Ways Thursday
Roman Anthony

Heading for the Injured List
CFB

Sam Leavitt Expected to Be Full-Go for Fall Camp
Tarik Skubal

Could Return in 4-6 Weeks After Successful Elbow Surgery
Cole Ragans

Royals Hopeful That Cole Ragans Makes his Next Start
Emilio Pagán

Emilio Pagan has Grade 2 Hamstring Strain, Expected to Miss 4-8 Weeks
Joe Ryan

Listed as Scheduled Starter for Saturday Against Cleveland
Tyler Glasnow

Not Expected to Land on the Injured List
Framber Valdez

Suspension Reduced to Five Games
Framber Valdez

Suspended Six Games
Tyler Glasnow

Exits Early on Wednesday With Back Pain
CFB

Brauntae Johnson the Next Star in Notre Dame's Secondary?
CFB

Ethan Barbour a Name to Know in Georgia's Tight End Room
CFB

Payton Pierce Next Up at Linebacker for Ohio State
CFB

Javin Gordon to Play Significant Role for Tennessee?
CFB

Tanook Hines Stepping into WR1 Role for USC
CFB

Rueben Owens II has "Star Potential" in Fourth Campaign
Brandon Woodruff

has Fluid Drained From his Right Shoulder
Brandon Woodruff

to Resume Throwing on Saturday, Return Imminent?
Carlos Correa

to Have Season-Ending Ankle Surgery
Jacob Misiorowski

Listed as Friday's Probable Starter
Logan Webb

Dealing With Knee Discomfort
Carlos Correa

Expected to Miss Significant Time With Ankle Injury
Collin Morikawa

Withdraws From Truist Championship
Xander Schauffele

Carries Elite Form Into Quail Hollow
Hideki Matsuyama

Looks to Bounce Back at Truist Championship
Matt Fitzpatrick

Secures Third Win of 2026 Season
Patrick Cantlay

Continues Playing Well Heading to Truist Championship
Ludvig Aberg

Returns to Action For Truist Championship
Justin Thomas

Searching for Consistency at Quail Hollow
Jordan Spieth

Looks to Break Through at Quail Hollow
Adam Scott

Brings Strong Form to Quail Hollow
Robert MacIntyre

a Steady Option at Truist Championship
Jason Day

Looks to Overcome Approach Struggles at Quail Hollow
Akshay Bhatia

Looks for Complete Game at Truist Championship
Justin Rose

to Continue Mid-Season Club Change at Truist Championship
Si Woo Kim

is Back to Peak Form Ahead of Truist Championship
Sam Burns

to Bounce Back at Truist Championship
Cameron Young

Looks to Carry Dominance to Quail Hollow
Rory McIlroy

Returns to Familiar Stomping Grounds This Week at Quail Hollow
Chris Gotterup

Looking to Bounce Back at Quail Hollow
Tommy Fleetwood

Looking For Better Iron Play at Quail Hollow
CFB

Mario Craver Enters No. 1 Wide Receiver Role for Marcel Reed
CFB

LaNorris Sellers a Strong Rebound Candidate in 2026
CFB

Cam Coleman Poised for Monster Year at Texas?
CFB

Will Hammond Pushing to Be Ready for Week 1
Alex Fitzpatrick

Looking to Keep Up Ball-Striking Output at Quail Hollow
CFB

Notre Dame Leads College Football in Returning Snaps
CFB

Two Ole Miss Football Players Arrested, Charged with DUI
Ben Griffin

Looks Solid on the Surface Heading to Charlotte
Chase Elliott

Earns his Second Texas Motor Speedway Victory
Denny Hamlin

Misses Out on Winning at Texas
Alex Bowman

Finishes Third for the Second Week in a Row at Texas
Tyler Reddick

Earns Seventh Top-Five Finish of the Season at Texas
Chris Buescher

Scores his First Career Texas Finish in the Top Five
CFB

Bryce Underwood in Better Situation Entering Sophomore Season
CFB

Nico Iamaleava Emerging as Leader, Playmaker for UCLA
Jack Della Maddalena

Gets Dominated At UFC Perth
Carlos Prates

Shines At UFC Perth
Beneil Dariush

Suffers A First-Round TKO Loss
Quillan Salkilld

Remains Unbeaten In The UFC
Tim Elliott

Drops Decision At UFC Perth
Steve Erceg

Wins Back-To-Back Fights
Ollie Schmid

Suffers First-Round TKO Loss
Marwan Rahiki

Remains Unbeaten
RANKINGS
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1B
2B
3B
SS
OF
SP
RP

RANKINGS

QB
RB
WR
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