👉 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


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.

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

 

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




REAL-TIME FANTASY NEWS

Isaac Guerendo

Could be a Drop Candidate in Dynasty Leagues in 2026
Jayden Higgins

' Dynasty Arrow is Pointing Up With Clear Path to WR2 Role in Houston
Jakobi Meyers

a Sell-High Candidate in Dynasty Formats?
Drake Maye

to Make a Big Leap in 2026 in Second Season With Josh McDaniels?
Jamal Murray

Earns First Career All-NBA Selection
Kevin Durant

Becomes First Player to Make All-NBA Team With Five Franchises
Shai Gilgeous-Alexander

Victor Wembanyama Lead All-NBA First Team
Taylor Hall

Enjoying Life in Carolina
Mark Stone

Returns to Action Sunday
Cale Makar

Rejoins Avalanche Lineup Sunday
Cason Wallace

Joins Starting Unit Sunday
De'Aaron Fox

Doesn't "Feel Great" Entering Game 4
Jalen Williams

Won't Play Sunday
Christian Watson

Is Christian Watson on the Verge of a Legitimate Breakout?
Khalil Shakir

Dynasty Value in Decline
Travis Hunter

Still a Risky Buy, Even at his Sunken Dynasty Cost
Gunnar Helm

a Dynasty Sleeper with Room to Grow
Drake Maye

Is Drake Maye Becoming the Most Valuable Player in Superflex Dynasty Leagues?
Dylan Cease

Removed From Sunday's Start With Hamstring Discomfort
Vladimir Guerrero Jr.

Exits Sunday's Game Early with Elbow Contusion
MLB

Reds-Cardinals Game Postponed on Sunday
Edward Cabrera

Cubs Place Edward Cabrera on the 15-Day Injured List
Denny Hamlin

the Favorite to Win at Charlotte
Tyler Reddick

on Pole for Coca-Cola 600
Christopher Bell

Could Break Out of Slump
Kyle Larson

May have A Solid Day at Charlotte
Ryan Blaney

Is A DFS Risk for Charlotte Lineups
William Byron

Could have A Great DFS Performance at Charlotte
Chase Briscoe

Is A Solid Tournament Option for Charlotte DFS Lineups
Pat Freiermuth

Steelers Restructure Pat Freiermuth's Contract
Ty Gibbs

May not be Worth his Salary for Charlotte DFS Lineups
Chris Buescher

May be a Sneaky Tournament Option for Charlotte Lineups
NASCAR

Bubba Wallace Has Favorable Upside for Charlotte DFS Lineups
Ross Chastain

Is A Strong Addition for DFS Lineups at Charlotte
Austin Dillon

Should Fantasy Managers Roster Austin Dillon for Charlotte DFS Lineups?
Chase Elliott

Should Be Strong at Charlotte
Carson Hocevar

Confident for Coca-Cola 600
Corey Heim

a Chalk DFS Pick at Charlotte
Michael McDowell

Is Michael McDowell A Tournament Option for Charlotte Lineups?
Jordan Mason

a Short-Term Dynasty Depth Piece
Dontayvion Wicks

Can Dontayvion Wicks Stand Out in Another Crowded Offense?
Chuba Hubbard

Dynasty Value Back on the Rise
Juwan Johnson

an Overlooked Buy Candidate for Contending Dynasty Managers
Kimani Vidal

Easily Acquirable as a High-Value Insurance Back
Evan Mobley

Tallies Series-High 24 Points on Saturday
Donovan Mitchell

Struggles at the Line Saturday
Karl-Anthony Towns

Continues Playmaking Surge on Saturday
OG Anunoby

Delivers Clean Shooting Line Saturday
Mikal Bridges

Fills Box Score in Game 3 Win
Jalen Brunson

Pushes Knicks Closer to NBA Finals
Orlando Magic

Magic Interview Jeff Van Gundy for Head-Coaching Position
Phillip Danault

Extends Point Streak to Three Games
Josh Anderson

Nets Two Goals in Painful Loss
Jalen Chatfield

Delivers Two Assists in Crucial Win
Mark Jankowski

Contributes Two Assists in Game 2 Victory
Eric Robinson

Scores in Second Consecutive Game
Nikolaj Ehlers

Tallies Two Goals as Hurricanes Bounce Back Saturday
Giannis Antetokounmpo

Magic Reportedly Have Giannis Antetokounmpo on Their Radar
Ajay Mitchell

Won't Play Sunday
Dylan Harper

Not on Injury Report for Game 4
De'Aaron Fox

Off the Injury Report Ahead of Game 4
Jalen Williams

Questionable for Sunday Night
Ja'Tavion Sanders

a Dynasty Dart Throw With Potential Untapped Upside
Geno Smith

a Low-Cost Dynasty Add Who Still Comes with Risk
C.J. Stroud

Still a Capable and Undervalued Dynasty QB2
Bhayshul Tuten

More Big Plays in 2026 Could Transform Bhayshul Tuten into a Dynasty Steal
Joe Mixon

Is Joe Mixon's NFL Career Over?
MLB

Orioles-Tigers Game Postponed on Saturday
RJ Harvey

to be Relegated to Third-Down Role After Rookie RB Addition?
MLB

Rays-Yankees Postponed on Saturday
Devin Vassell

Posts 20 Points in Game 3 Loss
De'Aaron Fox

Struggles From Deep in Friday's Loss
Victor Wembanyama

Held to Four Rebounds in Game 3 Loss
Nazem Kadri

Contributes an Assist in Losing Effort
Ross Colton

Nets Lone Avalanche Goal Friday Night
Rasmus Andersson

Extends Assist Streak to Four Games
Pavel Dorofeyev

Focuses on Playmaking in Friday's Win
Jack Eichel

Enjoys Multi-Point Outing in Game 2 Win Friday
Ivan Barbashev

Amasses Three Points as Golden Knights Grab 2-0 Series Lead
Mickey Moniak

Heads to Injured List With Ankle Sprain
Frederik Andersen

Hurricanes Keep Faith in Frederik Andersen
Devon Levi

Attracting Interest From Senators
Scott Wedgewood

Starting Game 2 Against Golden Knights
Ben Hutton

Scratched for Game 2 Against Avalanche
Mark Stone

Won't Play Friday
Jackson Merrill

has Sore Ribs, Expected to Avoid Injured List
Cale Makar

Remains Out Friday
CFB

Jaron-Keawe Sagapolutele Looking to Take Sophomore Leap
CFB

Jadan Baugh Primed to Lead Florida Offense in 2026
CFB

LSU Hires Ed Orgeron As Special Assistant
CFB

North Carolina and South Carolina Cancel Home-And-Home Series
CFB

Confidence High in Mississippi State's Kamario Taylor
MLB

Reds-Cardinals Game Postponed on Friday
Trevor Story

has Hernia Surgery, Expected to Miss 6-10 Weeks
Roman Anthony

Dealing With Sprained Ligament in his Finger
Ronald Acuña Jr.

Ronald Acuna Jr. Exits Early, X-Rays Come Back Negative
Robby Snelling

Will Undergo Tommy John Surgery
Jackson Merrill

Tweaks his Back on Wednesday, Pulled Early
CFB

Lincoln Riley Believes USC is Ready for Playoff Run
CFB

Notre Dame-Stanford Rivalry Renewed Through 2028
CFB

Ahmad Hardy Says He's "Back to the Road to Success"
CFB

Texas Tech Graduate Judge Recuses Himself from Brendan Sorsby Case
CFB

UCLA Tackle Jordan Davis Officially Eligible for 2026 Season
CFB

Bret Bielema Supports Significant College Football Playoff Expansion
Michael Thorbjornsen

Brings High Upside to CJ Cup Byron Nelson
Luke List

Carrying Poor Form Into CJ Cup Byron Nelson
Tom Kim

Hoping to Build on Strong Myrtle Beach Finish
PGA

Sungjae Im Brings Upside to TPC Craig Ranch
Billy Horschel

Looking for Turnaround at CJ Cup Byron Nelson
Adam Hadwin

Difficult to Trust at TPC Craig Ranch
Tony Finau

Looking for Consistency at TPC Craig Ranch
Luke Clanton

Searching for Form at CJ Cup Byron Nelson
Aaron Rai

Withdraws From CJ Cup Byron Nelson
Wyndham Clark

Can Wyndham Clark Find Form at CJ Cup?
Si Woo Kim

Looks To Stay Hot at CJ Cup
Scottie Scheffler

to Defend CJ Cup Byron Nelson Title This Week
Jordan Spieth

Looking For Victory at TPC Craig Ranch
PGA

Matti Schmid Looks to Keep Recent Momentum Going at TPC Craig Ranch
Brooks Koepka

a High-Upside Play at CJ Cup Byron Nelson
Yandy Díaz

Yandy Diaz Exits Early on Tuesday After Being Hit By Pitch
Chris Kirk

Continues Search For Putting Form at TPC Craig Ranch
Rasmus Hojgaard

Looking to Shake Off Poor Major Showing at TPC Craig Ranch
Joel Dahmen

is of No DFS Consideration This Week in Dallas
Pierceson Coody

is Not The Fun DFS Play He Used to Be
Gerrit Cole

to Make Season Debut on Friday Against Rays
Drake Baldwin

Braves Place Drake Baldwin on Injured List With Oblique Strain
CFB

Ezavier Crowell has Immediate Opportunity at Alabama
CFB

Mark Bowman a Day 1 Impact Player for USC?
CFB

Bill Belichick Says Relationship with First North Carolina Team "Wasn't Great"
CFB

Kemario Taylor a Breakout Candidate at Quarterback
CFB

Trinidad Chambliss the Undisputed Top SEC Quarterback Entering 2026?
CFB

Rocco Becht The "Unifier" of Penn State's Roster
RANKINGS
C
1B
2B
3B
SS
OF
SP
RP

RANKINGS

QB
RB
WR
TE
K
DEF