👉 TAP TO SAVE 30% WITH CODE NEW
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


POPULAR FANTASY TOOLS

#1 Expert Projections
Save 30% Now
Import Your Leagues
Top-Rated Accuracy
Draft Simulator
Enter League Settings
Compare Any Players
Rookies & Call-Ups
24x7 News and Alerts

Rookie Report: Prospect Risers and Fallers for Week 4

Fantasy baseball prospects recently called up, and their rest of season projections. Phil Goyette evaluates rising and falling fantasy baseball rookies for Week 4.

Welcome to the latest edition of RotoBaller’s Recently Promoted Prospects series for fantasy baseball! Here I discuss some recently promoted MLB prospects and rookies - making note of what I think their upside could be for fantasy baseball managers, and whether they are potential risers or fallers.

It’s early in the season and we’ve already seen 47 rookies make their MLB debut in 2021. This week I will highlight five prospects to know for fantasy baseball and their projections. I will use video looks, scouting reports, analytics, and RotoBaller’s premium projections to predict what each player could do if given a continued opportunity in 2021.

Here are your recently promoted prospects for Week 4 of the fantasy baseball season.

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

 

J.B. Bukauskas, Arizona Diamondbacks

16% Rostered on Yahoo

Situation: When Diamondbacks reliever Anthony Swarzak struggled early in the season, the team didn't hesitate to DFA him and make room for J.B. Bukauskas in the bullpen. Bukauskas, 24, was a first-round selection of the Houston Astros in the 2017 draft. His athleticism and collegiate performance as a starter for the University of North Carolina in college made him a popular pick as a future impact player. However, he has always come with a significant dose of reliever risk in his profile. He was traded to Arizona in the deal that sent Zack Greinke to Houston.

Skill: Bukauskas has an athletic, high effort delivery. His mechanics have always made observers think that his most likely professional home would be in the bullpen. This is probably good news, as Bukauskas's stuff should really play up in a relief role. His fastball should routinely touch the mid-90s in short stints, and he has both a slider and changeup that can flash plus at times. The secondary offerings also tunnel well off the fastball, making for an enticing package that should be able to handle high-leverage situations:

Projection: Bukauskas should provide plenty of strikeouts, as he routinely ran strikeout rates around 30% in the upper minors. However, his WHIP and ERA will likely suffer due to control issues stemming from his aforementioned high effort delivery. I doubt he's going to be in line for saves this season, but I wouldn't be surprised to see him pick up holds in some high leverage appearances out of the bullpen.

 

Sam Hentges, Cleveland Indians

0% Rostered on Yahoo

Situation: The next model off the line from the Cleveland pitching factory, left-hander Sam Hentges was called up to The Show on April 20. Cleveland doesn't have a need for him in the starting rotation at this moment, so Hentges is likely to work low-leverage situations and possibly be deployed as a bulk guy behind an opener early this season.

Skill: Cleveland has had some great successes in taking pitchers with command-first profiles (Shane Bieber, Aaron Civale, and Zach Plesac) and getting their stuff to take a jump at the MLB level. Hentges doesn't really fit this dynamic as his primary issue has been with his control. He did undergo Tommy John surgery in 2017, and command can be the last and hardest piece to regain in recovery from Tommy John. When he's on, his fastball is a mid-90s heater delivered from his big 6'6", 245 pound frame. He also has some feel for spin, flashing two shapes of breaking balls, with a downer curveball being the most likely out pitch:

Projection: Hentges is most likely to be deployed in a long relief or bulk inning role to start out his time in the majors. His stuff and the difficult angle he creates from the left-hand side means he could very well be employed in a left-handed specialist role, with some holds coming along for the ride. He doesn't need to be on your radar right now unless you play in an extremely deep league, however.

 

Alex Kirilloff, Minnesota Twins

13% Rostered on Yahoo

Situation: While not strictly a first-time MLB call-up, Kirilloff did make his MLB regular-season debut earlier this week. He was called up from the Twins taxi squad for the double-header on April 14th, only to be unceremoniously dumped back down to the alternate site the following day. Kirilloff was the Twins first-round draft pick in 2016. Despite my belief to the contrary, Kirilloff hasn't figured in the Twins' everyday plans yet this season.

Skill: Kirilloff can really hit. He's probably more of an average over power type guy at his peak, but there's still a good chance that he pairs a 70 grade hit tool with 60-grade pop when he's done developing at the major league level. He also has a knack for hitting well in big situations, whether it's in the minor league playoffs or being unexpectedly called up to the playoffs at the Big League level. He's got a great feel for hitting with a fluid swing that doesn't get stuck in a groove. On the downside, he's a limited runner and playing anything other that 1B/LF is going to be a big stretch for him defensively. Still, we need him for fantasy purposes, so we can just be content with his power and run production potential:

Projection: Our ATC projections were optimistic pre-season, giving Kirilloff a .274/.325/.439 slash line with 12 HR and 5 SBs in 415 PAs. The stolen base numbers are wildly optimistic, as Kirilloff doesn't run well and doesn't have the type of impact speed to be a regular base stealer in the majors. Still that's a very usable profile even without the stolen bases. We just need Kirilloff to get the chance for 400+ PAs.

 

Nick Maton, Philadelphia Phillies

0% Rostered on Yahoo

Situation: The Phillies called up former 7th-round draft pick Nick Maton earlier this week. Maton has made two starts at shortstop since being called up, batting 8th in the order in each game.

Skill: Maton gives us a glove-first profile that's unlikely to be of much use in fantasy leagues, even in the very deep variety. His best stop in the minors came in the High-A Florida State League in 2019 where he posted a .346 wOBA with 5 home runs and 11 stolen bases over 93 games as an old-for-level prospect. Still, he should get regular playing time in the Phillies middle infield for the moment with Jean Segura on the IL.

Projection: He didn't get an ATC pre-season projection, but I think Maton can maybe give you a batting average in the .260 range with a handful of stolen bases as your best case scenario this season.

 

Spencer Howard, Philadelphia Phillies

4% Rostered on Yahoo

Situation: The Phillies have just called top pitching prospect Spencer Howard up to the active roster. A popular pitching stash before the 2020 season, Howard struggled in his debut, posting a 5.92 ERA over 6 starts. He's presently lined up to start the 2021 season in the bullpen for Philadelphia.

Skill: Howard flashes above-average stuff from a prototypical starter's frame. In his 2020 debut, his four-seam fastball sat around 94 mph and featured good carry at the top of the strike zone. The pitch featured 99% active spin and a 9% "rise" above the average MLB four-seamer last year. Howard's changeup was supposed to be his plus secondary offering, but it didn't have a great movement profile and didn't generate many whiffs (22.2%). His breaking balls did show some promising movement though, and his slider limited MLB bats to a .303 xwOBA. Look for him to rely heavily on the fastball if limited to a bullpen role.

Projection: If he's primarily used out of the bullpen, look for Howard to post an ERA below his current projections in the 4.50 range. He will be able to rely on his plus fastball in that role and could dominate in short stints. Most projection systems have him making around 10 starts this season. If that comes to fruition, there could be some value here. However, I would wait until we get some evidence from the team that they do want to use him in the rotation this year before grabbing Howard off the wire.



Download Our Free News & Alerts Mobile App

Like what you see? Download our updated fantasy baseball app for iPhone and Android with 24x7 player news, injury alerts, sleepers, prospects & more. All free!



More Fantasy Baseball Prospects and Rookies




POPULAR FANTASY TOOLS

#1 Expert Projections
Save 30% Now
Import Your Leagues
Top-Rated Accuracy
Draft Simulator
Enter League Settings
Compare Any Players
Rookies & Call-Ups
24x7 News and Alerts

REAL-TIME FANTASY NEWS

Brent Rooker

Exits Early on Thursday Due to Apparent Injury
NFL

No New Injury Issues for Francis Mauigoa
Travis Hunter

to be "Limited Participant" During Offseason Workouts
Carolina Panthers

Denzel Boston Visiting With Panthers on Thursday
Mark Andrews

Ready for More Opportunities in 2026
Tyrone Tracy Jr.

Part of a Muddled Giants Backfield Heading into 2026
Chimere Dike

Fantasy Value Potentially Limited by What He Offers in Return Game
Chase Brown

an Important Name to Monitor on Day 1 of the NFL Draft
Bijan Robinson

Could Just Be Entering His Prime
Jameson Williams

Consistency the Key to a True Jameson Williams Breakout
Jarace Walker

May Exit Pacers Lineup Again Thursday
Aaron Nesmith

Out for Sixth Consecutive Game
T.J. McConnell

Andrew Nembhard, T.J. McConnell Unavailable Thursday
Dru Smith

Iffy for Thursday
Norman Powell

Questionable Thursday
Sam Hauser

Could Miss Thursday's Game
Neemias Queta

Uncertain for Thursday
Zach Benson

Scores Twice in Comeback Victory
Logan Thompson

Shuts Out the Leafs
Zach Eflin

Undergoes Successful Elbow Surgery, Will Miss Remainder of 2026
Derrick White

Listed as Questionable for Thursday
Tre Johnson

Iffy for Thursday
Jaylen Brown

Iffy to Face Knicks
Bilal Coulibaly

Questionable Against Bulls
Gui Santos

Could Miss Another Game Thursday
Alexandre Sarr

Out Again Thursday
Al Horford

to Remain Out Thursday
Caleb Martin

Remains Sidelined Wednesday
Kristaps Porzingis

Unavailable Against Lakers
Klay Thompson

Ruled Out Wednesday
Stephen Curry

Questionable for Thursday Night
Brandon Williams

to Miss Back-To-Back with Illness
LeBron James

Ready to Return Thursday
Daniel Gafford

Ruled Out Vs. Phoenix
J.K. Dobbins

Broncos Prioritized Re-Signing J.K. Dobbins
NFL

Francis Mauigoa to Undergo Additional Imaging on a Back Issue
Kaleb McGary

Retires After Seven Years in the NFL
Jawaan Taylor

Signs with the Falcons
Andrei Kuzmenko

to Be Re-Evaluated in 7-8 Days
Mason Appleton

Won't Play Thursday
Tony DeAngelo

Expected to Return Thursday
John Klingberg

Rejoins Sharks Lineup Wednesday
Alex Lyon

Dealing With Lower-Body Injury
Oliver Ekman-Larsson

Back in Action Wednesday
Alex Ovechkin

Won't Decide Future Until Offseason
Cole Ragans

"Should be Good" for Next Start
Reynaldo López

Reynaldo Lopez Handed Seven-Game Suspension
Jorge Soler

Suspended Seven Games, Will Appeal
NFL

NFL Scouts See Plenty of Upside With Drew Allar
NFL

Ty Simpson to Fall into Second Round in NFL Draft?
Cleveland Browns

Todd Monken "Fired Up" About Quarterback Competition
Cleveland Browns

KC Concepcion Visiting With the Browns
Cole Ragans

Diagnosed With Thumb Contusion
Houston Texans

Texans Pick Up Will Anderson's Fifth-Year Option
C.J. Stroud

Texans Exercise C.J. Stroud's Fifth-Year Option
Cole Ragans

Leaves Early on Wednesday After Being Hit in the Hand
Jacob deGrom

Expects to Make his Next Start
Konnor Griffin

Pirates Sign Konnor Griffin to Nine-Year Extension
Parker Washington

Undervalued Despite League-Winning Finish in 2025
Nico Collins

Is Nico Collins Still a Dynasty WR1?
Justus Annunen

Ends Predators' 120-Game Streak Without a Shutout
Trevor Zegras

Leads Flyers to Victory Tuesday
Kevin Bahl

Sustains Lower-Body Injury Against Stars
Michael Rasmussen

Likely to Miss Rest of Regular Season
Dmitry Kulikov

Done for the Season After Breaking Finger
Jalen Chatfield

Exits Early With Lower-Body Injury
Nazem Kadri

Suffers Upper-Body Injury Tuesday
Tyrrell Hatton

a Steady Option at The Masters
Justin Thomas

a High-Risk, High-Reward Option at The Masters
PGA

Sungjae Im a Volatile Option at the Masters
Nicolai Hojgaard

Carrying Momentum Into The Masters
Si Woo Kim

in Strong Form Heading to The Masters
Chris Gotterup

Ready to Make His Masters Debut
Patrick Reed

Brings Momentum to The Masters
Jon Rahm

Looks Poised for His Second Green Jacket
Morgan Geekie

Collects Second Career Hat Trick
Joel Eriksson Ek

has Three Points in Victory
Jacob deGrom

Doesn't Have Structural Damage in his Knee
J.T. Realmuto

Leaves Game on Tuesday Due to Bruised Right Foot
Cody Ponce

to Have Knee Surgery, Expected to Miss Six Months
Alejandro Kirk

Facing Six-Week Absence
Jacob deGrom

to Undergo MRI on Tuesday
Mike Trout

Back in the Lineup on Tuesday
Hunter Brown

Diagnosed with Grade 2 Shoulder Strain
Pavel Mintyukov

Returns From Three-Game Absence
Cutter Gauthier

Remains Sidelined Tuesday
Kirby Dach

Ready to Return Tuesday
Adam Scott

Form Points to Him Competing at Masters
Jordan Spieth

Finding Consistency Heading to Masters
Hideki Matsuyama

Trending In Right Direction For Masters
Cade Horton

to Undergo Season-Ending Elbow Surgery
Tommy Fleetwood

a Contender if his Putter Cooperates at The Masters
Jacob deGrom

Pitches Through Knee Issue on Monday
Dalton Rushing

Smacks Two Homers in Rout of Blue Jays
Max Scherzer

Dealing With Forearm Tendinitis, Expected to Make his Next Start
Collin Morikawa

Vegas has Lost Confidence in Collin Morikawa Ahead of Masters Tournament
Ludvig Aberg

One of the Top Plays For This Week's Masters Tournament
Rory McIlroy

Set to Defend his Long-Awaited Masters Victory
Bryson DeChambeau

Looks to Finally Claim a Green Jacket
Patrick Cantlay

Needs Plenty to Go Right at Augusta
Harris English

Playing Solid Golf Heading to Masters
Sam Burns

Bouncing Back Nicely After Slow Start to 2026 Season
Corey Conners

Quietly Putting Together A Strong 2026 Season
Russell Henley

Looks to Bounce Back At Masters
Mike Trout

Held Out of Series Opener Against Braves
Chris Duncan

Suffers Second-Round Submission Loss
Renato Moicano

Gets Back In The Win Column
Tabatha Ricci

Gets Outgrappled
Virna Jandiroba

Bounces Back
Brendson Ribeiro

Suffers First-Round Submission Loss
Abdul-Rakhman Yakhyaev

Earns First-Round Submission Win
Rafael Estevam

Suffers His First Loss
Ethyn Ewing

Dominates At UFC Vegas 115
RANKINGS
C
1B
2B
3B
SS
OF
SP
RP

RANKINGS

QB
RB
WR
TE
K
DEF