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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.

Be sure to check all of our fantasy baseball lineup tools and resources:

 

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




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REAL-TIME FANTASY NEWS

Gleyber Torres

Accepts Tigers Qualifying Offer
Ausar Thompson

Returning Versus Atlanta
Cade Cunningham

Active on Tuesday Night
Domantas Sabonis

to Miss Wednesday's Game
Paul George

Won't Play Wednesday Night
Onyeka Okongwu

Available on Tuesday
Joel Embiid

Listed as Doubtful for Wednesday
Jalen Suggs

Available Tuesday
Zaccharie Risacher

Ruled Out With Hip Contusion vs. Pistons
Odell Beckham Jr.

Officially Reinstated by NFL Commissioner
Kristaps Porzingis

Ruled Out on Tuesday Night
Buddy Hield

Available for Tuesday's Matchup With Orlando
Matt Murray

to Miss Six Weeks With Lower-Body Injury
Ilya Lyubushkin

Out on Tuesday
Giannis Antetokounmpo

Out 1-2 Weeks With Groin Strain
Jamie Benn

Makes Season Debut Tuesday
Stephon Castle

Sidelined 1-2 Weeks
Evgenii Dadonov

on Track to Return Tuesday
Dougie Hamilton

a Game-Time Call Tuesday
Anthony Cirelli

Expected to Return Against Devils
Victor Hedman

Questionable for Tuesday
LeBron James

Aims to Make Season Debut Tuesday
Auston Matthews

to Miss at Least Two More Games
Grayson Allen

Sidelined on Tuesday
Gabe Vincent

Set to Suit Up Tuesday
C.J. Stroud

Expected to Return in Week 13 Against Colts
C.J. Stroud

to Miss Another Game
Jonathan Kuminga

Remains Out Tuesday
Keegan Murray

Could Make his Season Debut This Week
Caris LeVert

Liston as Out on Tuesday
Tobias Harris

Could Return Thursday
Ausar Thompson

Questionable Again on Tuesday
Joe Mixon

Uncertainty Remains Around Joe Mixon's Return Timeline
Cade Cunningham

is Questionable Tuesday in Atlanta
Jaylen Warren

Mike Tomlin Optimistic About Jaylen Warren's Availability for Week 12
C.J. Stroud

Not Expected to Play on Thursday Night
Aaron Rodgers

Won't Need Surgery on Fractured Wrist, Could Play in Week 12?
Davis Mills

Prepping for Third Straight Start in Week 12?
CFB

Sam Leavitt Set to Enter Transfer Portal?
Mason Rudolph

Could Make His First Start of 2025 in Week 12
Brock Wright

Sets Career-High in Targets; Lined Up for More Work?
Kimani Vidal

Struggles Again and Faces Role Uncertainty After Bye
Dak Prescott

in Full Command Monday Night With Four Touchdown Passes
Quentin Johnston

Posts Zero Catches During Offensive Collapse
George Pickens

Erupts for 144 Yards, Touchdown in Monday Night Win
CeeDee Lamb

George Pickens Benched for First Drive
Jose Altuve

Undergoes Foot Surgery
Alex Singleton

Broncos Optimistic Patrick Surtain, Alex Singleton Will Return After the Bye
Trey Hendrickson

Doubtful Again in Week 12
Shedeur Sanders

Expected to Make First Career Start in Week 12
Josh Jacobs

Dealing With Knee Contusion
Mikael Granlund

Unavailable Monday
Alex Bregman

Red Sox Going for Either Alex Bregman or Pete Alonso?
Conor Garland

Misses Monday's Game
Eetu Luostarinen

Out on Monday
Drake London

Considered "Week-to-Week"
Drew Doughty

Listed as Week-to-Week
Ja'Marr Chase

Being Suspended for One Game for Unsportsmanlike Conduct
John Carlson

a Game-Time Call Monday
Viktor Arvidsson

Out Week-to-Week
Charlie McAvoy

Out Against Hurricanes
CFB

James Franklin to be Virginia Tech's Next Head Coach
CFB

Fernando Mendoza the Clear Heisman Trophy Favorite?
CFB

Beau Pribula Has Chance to Face Oklahoma on Saturday
Mitchell Marner

Establishes Vegas Record Sunday
Mats Zuccarello

Logs Two Assists in Overtime Victory
Lucas Raymond

Leads Red Wings to Victory at MSG
Quinn Hughes

Delivers Four Assists in Sunday's Win
Conor Garland

Limited to Handful of Minutes Sunday
Ryan Hartman

Suffers Lower-Body Injury
Jack Della Maddalena

Gets Dominated
Islam Makhachev

Claims UFC Welterweight Belt
Zhang Weili

Gets Outclassed
Valentina Shevchenko

Wins Unanimous Decision At UFC 322
Sean Brady

Suffers First-Round TKO Loss
Michael Morales

Remains Unbeaten
Leon Edwards

Suffers Second-Round Knockout Loss
Leon Edwards

Carlos Prates Becomes The First Man To Knock Out Leon Edwards
Beneil Dariush

Suffers Brutal First-Round Knockout Loss
Beneil Dariush

Benoit Saint Denis Knocks Out Beneil Dariush In 16 Seconds
Josh Naylor

Mariners Finalizing Five-Year Contract
CFB

Jeremiah Smith, Carnell Tate Not Dealing With Long-Term Injuries
CFB

Virginia Tech Close To Naming James Franklin As Head Coach
CFB

Garrett Nussmeier Doubtful vs. Arkansas On Saturday
Edwin Díaz

Blue Jays Interested in Signing Edwin Diaz?
Jacob deGrom

Named AL Comeback Player of the Year
Ronald Acuña Jr.

Ronald Acuna Jr. Wins NL Comeback Player of the Year Award
Aroldis Chapman

Named AL Reliever of the Year
Edwin Díaz

Edwin Diaz Named NL Reliever of the Year
Justin Thomas

Will Miss Start Of 2026 After Undergoing Back Surgery
Islam Makhachev

Set For UFC 322 Main Event
Jack Della Maddalena

Set For His First Title Defense
Zhang Weili

Can Become The New Women's Flyweight Champion
Valentina Shevchenko

Set For UFC 322 Co-Main Event
Michael Morales

Looks To Remain Undefeated
CFB

Mario Craver a Game-Time Decision for Week 12
Sean Brady

Set For Title Eliminator Bout
Carlos Prates

A Favorite At UFC 322
Leon Edwards

Looks To Get Back In The Win Column
Benoît Saint Denis

Benoit Saint Denis Set To Open Up UFC 322 Main Card
Beneil Dariush

Looks To Win Back-To-Back Fights
CFB

Virginia's Chandler Morris Trending Toward Facing Duke on Saturday
Edwin Díaz

Edwin Diaz Says There's a "50-50" Chance he Returns to Mets
Shohei Ohtani

Wins his Fourth MVP Award
Aaron Judge

Wins AL MVP Award Again
Raisel Iglesias

Dodgers Interested in Signing Raisel Iglesias
Pete Alonso

Orioles Could be in the Mix to Sign Pete Alonso
Félix Bautista

Felix Bautista Could Return in Second Half in 2026
Kodai Senga

Attracting Trade Interest, Will the Mets Move him?
Yordan Alvarez

Expected to be Ready for Spring Training
Byron Buxton

Could Waive his No-Trade Clause
Paul Skenes

the Unanimous NL Cy Young Winner
Tarik Skubal

Wins AL Cy Young for Second Straight Year

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