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

Expert Advice
Articles & Tools
Import Your Leagues
Daily Stats & Leaders
All Pitcher Matchups
Compare Any Players
Compare Any Players
Rookies & Call-Ups
24x7 News and Alerts

MiLB Stats: Using Sabermetrics for Fantasy Baseball

Rick Lucks breaks down how to use minor league stats to identify potential sleepers and busts as his series on making sabermetrics more accessible to fantasy managers continues.

Once you've grown accustomed to having advanced tools to help make fantasy decisions, it can feel disorientating to be without them. Prospects are increasingly becoming a focal point in both real and fantasy baseball, but the minors simply do not have all of the data available for MLB players. For example, advanced plate discipline stats, Pitch Info, and anything Statcast-related are all currently unavailable for minor league campaigns unless you're in an MLB front office.

Does this mean we go back to looking at ERA and batting average as the only indicators of future performance? Of course not! Instead, we do our best to work with what we have. The process begins by looking at the environment. Higher levels of competition result in more accurate data, so you should start by excluding anything lower than Double-A if a player's track record allows it.

Since there was no minor league baseball in 2020, the year will be a blind spot for fantasy managers for the foreseeable future. That said, most current prospects have some MiLB data even if a year is missing from their ledger. Here's how to effectively use MiLB data to give you an edge in your fantasy baseball league throughout the season:

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

 

In Leagues Of Their Own

The first point to remember is that the baseline for certain predictive metrics is different on the farm. Mike Podhorzer of FanGraphs.com had an excellent article detailing the specifics in 2017. For example, Double-A hitters collectively posted a .306 BABIP that year, while their Triple-A counterparts managed a .317 figure. Both marks are significantly higher than the MLB standard, making a performance that looks fluky league-average.

Another common sticking point is IFFB%. Double-A batters posted a ludicrous 21.6% IFFB% on their fly balls in 2017, while their Triple-A counterparts were only slightly better (20.8%). This leads many fantasy managers to conclude that every minor league prospect has a massive pop-up problem, but this is not the case. The stat is calculated differently on the farm, and you need to halve it to get something approaching an MLB projection.

Like MLB, each minor league and ballpark also has its own unique quirks and tendencies. For example, the former Pacific Coast League (now just Triple-A West) is notorious for inflating offensive statistics. If you want minor league ballpark factors, Baseball America posted them for 2019 here. They have also released updated 2021 ballpark factors, but you need a paid membership to access that data.

If you want three-year factors, MiLB.com posted them for Class-A Advanced, Double-A, and Triple-A for 2017-2019. Note that MLB renamed the former Class-A Advanced league to High-A for 2021 but most of the parks haven't changed.

 

Forecasting MiLB Performance

Another common problem with minor league statistics is sample size. It is simply easier to run an unsustainable BABIP or ERA in a small sample than a larger one. The minor leagues compound this problem by allowing a healthy player to be called up or demoted multiple times in one season, leaving us with two or more partial season samples instead of one full season of statistics.

Due to the small sample, metrics such as BABIP can be unreliable for minor league players. In this situation, it's advisable to examine the player's plate discipline numbers and batted ball distribution (GB% vs. FB%) because they stabilize (or become predictive) more quickly. We don't have the additional information provided by metrics such as O-Swing%, but these metrics are still a good way to start MiLB analysis.

For example, Pete Alonso of the Mets organization received 273 PAs at Double-A (.314/.440/.573 with 15 HR) and 301 PAs at Triple-A (.260/355/.585 with 21 HR) in 2018. He hit a lot of fly balls (44.2% FB% at Double-A, 40.4% at Triple-A) with authority (HR/FB rates of 20.5% and 28.4%, respectively) while walking enough (15.8% BB% at Double-A, 11% at Triple-A) to project for a reasonable average.

With the benefit of hindsight, we know that Alonso was a tremendous fantasy asset in 2019. He slashed an impressive .260/.358/.583 with 53 HR in 693 PAs, posting the elevated FB% (41.5%), HR/FB (30.6%), and BB% (10.4%) that his minor league resume suggested. He had a down year during the COVID-plagued 2020 season (.231/.326/.490 with 16 HR in 239 PAs) but has maintained the hard fly ball tendency and willingness to work a walk that he did in the minors. Last year, Alonso slashed .262/.344/.519 with 37 HR, establishing himself as a consistent 40-homer threat.

Stealing bases is easier in the minors, but strong success rates are still something to look for when projecting fast players. If a guy is only stealing successfully 50% of the time on the farm, his big league club probably won't give him a green light. Age is also a factor for minor leaguers, as a 28-year-old dominating a bunch of teenagers at Rookie ball isn't really that impressive.

 

Conclusion

To conclude, the fact that we do not know a minor leaguer's average airborne exit velocity or BABIP on ground balls does not prevent us from analyzing minor league players for fantasy purposes. We have tools such as FB% and BB% for hitters and FIP and LOB% for pitchers. We can still place these numbers into context by examining any given league's tendencies. Finding rookie breakouts before they happen is still challenging, but that's what makes it a worthy endeavor. Stay tuned to learn more about how to apply advanced stats within a fantasy context.



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 Sabermetrics & Statcast for Fantasy Baseball




POPULAR FANTASY TOOLS

Expert Advice
Articles & Tools
Import Your Leagues
Daily Stats & Leaders
All Pitcher Matchups
Compare Any Players
Compare Any Players
Rookies & Call-Ups
24x7 News and Alerts

REAL-TIME FANTASY NEWS

Alperen Sengün

Alperen Sengun Close to Triple-Double Versus Serbia
Nikola Jokić

Nikola Jokic Fills Box Score Against Turkey
Nikola Jović

Nikola Jovic Shakes Off Minor Injury
NBA

E.J. Liddell Inks Two-Way Deal With Nets
NBA

Ben Simmons Reportedly Considering Retirement
P.J. Washington

Agrees to Four-Year, $90 Million Extension
Mike Trout

Plans to Return on Thursday
Will Smith

X-Rays Negative on Will Smith's Hand
Jauan Jennings

Gets Incentives Added to Contract
Jakobi Meyers

Unsure About Potential Extension
Matthew Stafford

Off Injury Report Ahead of Week 1
Will Smith

Exits With Hand Contusion
Jackson Chourio

in Lineup Wednesday Despite Hamstring Cramps
Sepp Straka

Gets Captain's Pick to Join Team Europe
Christian Yelich

Dealing With Soreness in Lower Back
PGA

Victor Hovland to Make Third Ryder Cup Appearance for Team Europe
J.J. Spaun

Set to Represent Team USA for First Time at Bethpage
Russell Henley

Makes First Ryder Cup Appearance at Bethpage
Harris English

Named to Ryder Cup Team for Second Time
Kyle Finnegan

Dealing With Groin Issue
Shohei Ohtani

Will Pitch "Sometime This Weekend"
Jackson Chourio

Absent on Wednesday With Hamstring Cramp
Roman Anthony

Officially Goes on Injured List
Jauan Jennings

Limited on Wednesday, Expected to Play in Week 1
Malik Nabers

Not on Initial Injury Report
Roman Anthony

"High Probability" Roman Anthony Lands on Injured List
Justin Thomas

Making Fourth Ryder Cup Team Appearance at Bethpage
Ben Griffin

Making First Career Ryder Cup Appearance at Bethpage
Bryson DeChambeau

Set to be Part of Team USA at Bethpage
Jason Adam

to Undergo Season-Ending Surgery
Roman Anthony

Will Undergo MRI on Wednesday
Santi Aldama

Bags Double-Double in Losing Effort
Guerschon Yabusele

Erupts for 36 Points Against Poland
Luka Dončić

Luka Doncic Leads Slovenia Into Next Round at EuroBasket
San Antonio Spurs

Stanley Umude Signs Training Camp Deal With Spurs
Reece Beekman

Joins Magic for Training Camp
Justin Minaya

Signs Exhibit 10 Deal With Magic
Travis Hunter

Jaguars List Travis Hunter as Starting Wide Receiver, Backup Cornerback
Kyle Tucker

Leaves With Calf Tightness on Tuesday
Alexandre Sarr

to Miss Rest of EuroBasket
Max Scherzer

Blue Jays Confident Max Scherzer Will Make Saturday Start Despite Back Tightness
Roman Anthony

Leaves Early With Back Injury
Jared McCain

"On Pace" for Training Camp
Lourdes Gurriel Jr.

Done for the Year With Torn ACL
Luke Hughes

Devils Optimistic About Signing Luke Hughes
Martin Fehérváry

Martin Fehervary on Track to Be Ready for Training Camp
Dylan Holloway

Good to Go for Start of Season
Nick Kurtz

Back in Action on Tuesday
Josh Morrissey

Fully Healthy for Start of Season
Dennis Hildeby

Signs Three-Year Extension With Maple Leafs
Nick Lodolo

Scratched With Illness
Dalton Kincaid

Role Not Expected to Grow?
Quinshon Judkins

Zero Chance Quinshon Judkins Plays Against Bengals?
Najee Harris

Says He's Expecting to Play Against Chiefs
Adolis García

Adolis Garcia Departs Monday with Quad Injury
Franz Wagner

Collects Double-Double in Blowout Win
Alperen Sengün

Alperen Sengun Achieves Rare Numbers at EuroBasket
Nikola Vučević

Nikola Vucevic Dominates Against Sweden
Stefon Diggs

Expected to Suit Up in Week 1
Kristaps Porzingis

Finding Form at EuroBasket
Nikola Jović

Nikola Jovic Suffers Minor Injury at EuroBasket
DJ Moore

Bears Experimenting with DJ Moore in Backfield
Rome Odunze

Could Move All Around the Offense
Carolina Panthers

Dave Canales Comfortable With Panthers' Young Receivers
Quinshon Judkins

Not Considering NCAA Return
Dallas Goedert

Healthy for Week 1
Marvin Mims Jr.

Returns to Practice Monday
Lourdes Gurriel Jr.

Carted Off Monday With Knee Injury
Jason Adam

Diagnosed With Ruptured Left Quadriceps Tendon
Victor Wembanyama

Looking "Quite Stellar"
Matthew Stafford

Expected to Start in Week 1
Najee Harris

Cleared for Contact, Could Play in Week 1
Denny Hamlin

Ends Eventful Day at Darlington in Seventh Place
NASCAR

Bubba Wallace Almost Earns a Top-Five Finish at Darlington
John Hunter Nemechek

has His Best 2025 Performance at Darlington
Ryan Blaney

Has An Underwhelming Performance At Darlington
Josh Berry

Crashes Early and Suffers A Playoff Setback at Darlington
Giannis Antetokounmpo

"Staying in Milwaukee"
Jaylen Warren

Agrees to Two-Year Extension With Steelers
De'Von Achane

Practicing Monday, on Track to Play in Week 1
Quinshon Judkins

Could Report to Browns This Week
Chase Elliott

Under Playoff Pressure After 17th-Place Darlington Finish
Kyle Larson

Despite Hendrick Mediocrity, Kyle Larson Remains Pretty Safe in Playoffs
Alex Bowman

Opening-Lap Crash and Botched Pit Stop May Have Sunk Alex Bowman's Playoff Hopes
Erik Jones

Darlington Master Erik Jones Comes Up Short but Still Finishes Third
AJ Allmendinger

A.J. Allmendinger Impresses at Southern 500
Daniel Suarez

is A DFS Risk for Darlington Lineups?
Noah Gragson

Should Fantasy Managers Roster Noah Gragson for Darlington?
Ty Dillon

is an Excellent Punt Option for Darlington DFS Lineups
Denny Hamlin

Picking Up Where He Left Off At Darlington
Kyle Larson

The Sky Is The Limit for Kyle Larson at Darlington
Ryan Blaney

a Strong DFS Play at Darlington This Weekend
Tyler Reddick

Shouldn't Be Overlooked at Darlington This Weekend
Alex Bowman

An Easy Place-Differential Play in DFS This Weekend
Ty Gibbs

Could Be Strong at Darlington This Weekend
Erik Jones

Has Best Darlington Qualifying Effort Since Last Win
Zane Smith

Hopeful For Another Solid Run At Darlington

RANKINGS

QB
RB
WR
TE
K
DEF
RANKINGS
C
1B
2B
3B
SS
OF
SP
RP