👉 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
Props Tool
Compare Any Players
Compare Any Players
24x7 News and Alerts

Week 21 Start/Sit: MLB Starting Pitcher (SP) Matchups

What’s up RotoBallers. Below are all of the projected starting pitching matchups for Week 21, including our recommendation on whether to start or sit them for your fantasy baseball teams. Next to each matchup below, we also have a link to our Premium Starting Pitcher Daily Matchups, Streamers & DFS Tool. For those who aren't aware, our in-house tool analyzes SP matchups based on a variety of stats/metrics, and recommends whether start, sit, or stream any pitcher for seasonal and DFS leagues. It's pretty cool.

For every week of the fantasy baseball season, we look to analyze all of the projected starting pitcher matchups and put together our optimal lineups. This week there are a bunch of solid two-start pitchers including deGrom, Arrieta, Strasburg, Lester, Lynn, Kluber, Iwakuma, Syndergaard, Quintana and Shields. As always, there are also viable starting pitcher sleepers and streamers to consider off the waiver wire (Iglesias, Rodon, Severino, Smyly, Leake, Estrada, Corbin, Medlen, Chavez, Eovaldi, Ramirez), depending on your league size and format including AL-Only and NL-Only leagues.

Here at RotoBaller, we believe that it’s key to analyze every SP matchup, each and every week, to help determine which SPs to start/sit and to hopefully find some hidden gems to bolster your teams. This weekly piece considers all of the pitching performances thus far this season, the pitcher’s opponents, their career stats against the opponent, some ballpark factors and historical splits. With all of this information, we then provide our start/sit recommendations for each starting pitcher matchup for the approaching week of fantasy baseball.

 

SP Matchups & Start/Sit Recommendations

Editor’s Note: RotoBaller’s fantasy baseball waiver wire pickups list is updated every single day. Our awesome writers bring you analysis on hot or emerging starting pitchers, and also all other fantasy positions.

Note that MLB teams usually shuffle their rotations at the beginning of the week, so I’ll try my best to continue updating the matchups throughout the week:

PROBABLE PITCHERS - MONDAY (8/24/15)
GAME VISITING STARTER START/SIT HOME STARTER START/SIT
BAL@KC Ubaldo Jimenez SP | BAL Sit Kris Medlen SP | KC Start
BOS@CHW Joe Kelly SP | BOS Start Jeff Samardzija SP | CHW Sit
CLE@CHC Corey Kluber SP | CLE Start Jon Lester SP | CHC Start
COL@ATL Jorge De La Rosa SP | COL Start Julio Teheran SP | ATL Start
DET@CIN Buck Farmer SP | DET Sit Keyvius Sampson SP | CIN Sit
HOU@NYY Scott Feldman SP | HOU Sit Nathan Eovaldi SP | NYY Start
NYM@PHI Jacob deGrom SP | NYM Start Adam Morgan SP | PHI Sit
OAK@SEA Felix Doubront SP | OAK Start Hisashi Iwakuma SP | SEA Start
PIT@MIA J.A. Happ SP | PIT Sit Tom Koehler SP | MIA Sit
STL@ARI Lance Lynn SP | STL Start Robbie Ray SP | ARI Start
PROBABLE PITCHERS - TUESDAY (8/25/15)
GAME VISITING STARTER START/SIT HOME STARTER START/SIT
BAL@KC Miguel Gonzalez SP | BAL Sit Danny Duffy SP | KC Sit
BOS@CHW Wade Miley SP | BOS Start Jose Quintana SP | CHW Start
CHC@SF Jake Arrieta SP | CHC Start Matt Cain SP | SF Sit
COL@ATL Chad Bettis SP | COL Sit Mike Foltynewicz RP | ATL Sit
HOU@NYY Dallas Keuchel SP | HOU Start Ivan Nova SP | NYY Start
LAA@DET Jered Weaver SP | LAA Start Alfredo Simon SP | DET Sit
LAD@CIN Alex Wood SP | LAD Sit John Lamb SP | CIN Sit
MIL@CLE Wily Peralta SP | MIL Sit Josh Tomlin SP | CLE Sit
MIN@TB Ervin Santana SP | MIN Sit Nathan Karns SP | TB Start
NYM@PHI Noah Syndergaard SP | NYM Start Jerome Williams RP | PHI Sit
OAK@SEA Jesse Chavez SP | OAK Start Mike Montgomery SP | SEA Sit
PIT@MIA Charlie Morton SP | PIT Start Brad Hand RP | MIA Sit
SD@WAS James Shields SP | SD Start Stephen Strasburg SP | WAS Start
STL@ARI Jaime Garcia SP | STL Start Patrick Corbin SP | ARI Start
TOR@TEX Mark Buehrle SP | TOR Start Derek Holland SP | TEX Sit
PROBABLE PITCHERS - WEDNESDAY (8/26/15)
GAME VISITING STARTER START/SIT HOME STARTER START/SIT
BAL@KC Wei-Yin Chen SP | BAL Start Johnny Cueto SP | KC Start
BOS@CHW Rick Porcello SP | BOS Sit Chris Sale SP | CHW Start
CHC@SF Kyle Hendricks SP | CHC Start Jake Peavy SP | SF Sit
COL@ATL Yohan Flande SP | COL Sit Shelby Miller SP | ATL Start
HOU@NYY Collin McHugh SP | HOU Start Michael Pineda SP | NYY Start
LAA@DET Hector Santiago SP | LAA Start Justin Verlander SP | DET Start
LAD@CIN Brett Anderson SP | LAD Sit David Holmberg SP | CIN Sit
MIL@CLE Jimmy Nelson SP | MIL Start Cody Anderson RP | CLE Sit
MIN@TB Tyler Duffey SP | MIN Sit Chris Archer SP | TB Start
NYM@PHI Bartolo Colon SP | NYM Sit Jerad Eickhoff SP | PHI Start
OAK@SEA Chris Bassitt SP | OAK Start Felix Hernandez SP | SEA Start
PIT@MIA Jeff Locke SP | PIT Sit Chris Narverson SP | MIA Sit
SD@WAS Tyson Ross SP | SD Start Gio Gonzalez SP | WAS Start
STL@ARI John Lackey SP | STL Start Patrick Corbin SP | ARI Start
TOR@TEX David Price SP | TOR Start Colby Lewis SP | TEX Sit
PROBABLE PITCHERS - THURSDAY (8/27/15)
GAME VISITING STARTER START/SIT HOME STARTER START/SIT
BAL@KC Chris Tillman SP | BAL Sit Yordano Ventura SP | KC Start
CHC@SF Dan Haren SP | CHC Start Madison Bumgarner SP | SF Start
LAA@DET TBD | LAA TBD Randy Wolf SP | DET Sit
LAD@CIN Zack Greinke SP | LAD Start Anthony DeSclafani SP | CIN Sit
MIN@TB Tommy Milone SP | MIN Sit Drew Smyly SP | TB Start
NYM@PHI Jonathon Niese SP | NYM Start Aaron Harang SP | PHI Sit
PIT@MIA Gerrit Cole SP | PIT Start Justin Nicolino SP | MIA Sit
SD@WAS Andrew Cashner SP | SD Sit Joe Ross SP | WAS Start
SEA@CHW Vidal Nuno SP | SEA Sit Carlos Rodon SP | CHW Start
STL@ARI Carlos Martinez RP | STL Start Ruby De La Rosa RP | ARI Start
TOR@TEX Marco Estrada RP | TOR Start Yovani Gallardo SP | TEX Sit
PROBABLE PITCHERS - FRIDAY (8/28/15)
GAME VISITING STARTER START/SIT HOME STARTER START/SIT
BAL@TEX Kevin Gausman SP | BAL Start Cole Hamels SP | TEX Start
BOS@NYM Henry Owens RP | BOS Start Matt Harvey SP | NYM Start
CHC@LAD Jason Hammel SP | CHC Start Clayton Kershaw SP | LAD Start
CIN@MIL Raisel Iglesias RP | CIN Start Taylor Jungmann SP | MIL Start
COL@PIT Jon Gray RP | COL Sit Francisco Liriano SP | PIT Start
DET@TOR Matt Boyd SP | DET Sit R.A. Dickey SP | TOR Start
HOU@MIN Scott Kazmir SP | HOU Start Kyle Gibson SP | MIN Sit
KC@TB Edinson Volquez SP | KC Start Erasmo Ramirez SP | TB Start
LAA@CLE Andrew Heaney SP | LAA Start Danny Salazar SP | CLE Start
MIA@WAS Adam Conley SP | MIA Sit Max Scherzer SP | WAS Start
NYY@ATL Masahiro Tanaka SP | NYY Start Williams Perez SP | ATL Sit
OAK@ARI Sonny Gray SP | OAK Start Randall Delgado SP | ARI Sit
SD@PHI Ian Kennedy SP | SD Start Aaron Nola SP | PHI Start
SEA@CHW Taijuan Walker SP | SEA Start John Danks SP | CHW Sit
STL@SF Michael Wacha SP | STL Start Mike Leake SP | SF Start
PROBABLE PITCHERS - SATURDAY (8/29/15)
GAME VISITING STARTER START/SIT HOME STARTER START/SIT
BAL@TEX Ubaldo Jimenez SP | BAL Sit Martin Perez SP | TEX Sit
BOS@NYM Eduardo Rodriguez SP | BOS Start Jacob deGrom SP | NYM Start
CHC@LAD Jon Lester SP | CHC Start Mat Latos SP | LAD Sit
CIN@MIL Keyvius Sampson SP | CIN Sit Matt Garza SP | MIL Start
COL@PIT Chris Rusin RP | COL Sit J.A. Happ SP | PIT Sit
DET@TOR Buck Farmer SP | DET Sit TBD TBD
HOU@MIN Mike Fiers SP | HOU Start Mike Pelfrey SP | MIN Sit
KC@TB Kris Medlen SP | KC Start Jake Odorizzi SP | TB Start
LAA@CLE Garrett Richards SP | LAA Start Trevor Bauer SP | CLE Sit
MIA@WAS Tom Koehler SP | MIA Sit Jordan Zimmermann SP | WAS Start
NYY@ATL Luis Severino SP | NYY Start Matt Wisler SP | ATL Sit
OAK@ARI Felix Doubront SP | OAK Start Chase Anderson SP | ARI Sit
SD@PHI Colin Rea RP | SD Sit Adam Morgan SP | PHI Sit
SEA@CHW Hisashi Iwakuma SP | SEA Start Jeff Samardzija SP | CHW Start
STL@SF Lance Lynn SP | STL Start Ryan Vogelsong SP | SF Sit
PROBABLE PITCHERS - SUNDAY (8/30/15)
GAME VISITING STARTER START/SIT HOME STARTER START/SIT
BAL@TEX Miguel Gonzalez SP | BAL Sit Derek Holland SP | TEX Start
BOS@NYM Joe Kelly SP | BOS Start Noah Syndergaard SP | NYM Start
CHC@LAD Jake Arrieta SP | CHC Start Alex Wood SP | LAD Start
CIN@MIL John Lamb SP | CIN Sit Wily Peralta SP | MIL Sit
COL@PIT Jorge De La Rosa SP | COL Sit Charlie Morton SP | PIT Start
DET@TOR Alfredo Simon SP | DET Sit Mark Buehrle SP | TOR Start
HOU@MIN Lance McCullers SP | HOU Start Ervin Santana SP | MIN Sit
KC@TB Danny Duffy SP | KC Start Nathan Karns SP | TB Sit
LAA@CLE Jered Weaver SP | LAA Start Corey Kluber SP | CLE Start
MIA@WAS Brad Hand RP | MIA Sit Stephen Strasburg SP | WAS Start
NYY@ATL Nathan Eovaldi SP | NYY Start Julio Teheran SP | ATL Start
OAK@ARI Jesse Chavez SP | OAK Start Robbie Ray SP | ARI Sit
SD@PHI James Shields SP | SD Start Jerome Williams RP | PHI Sit
SEA@CHW Mike Montgomery SP | SEA Sit Jose Quintana SP | CHW Start
STL@SF Jaime Garcia SP | STL Start Matt Cain SP | SF Sit

 

 

MLB & Fantasy Baseball Chat Room

What Do You Think
[iflychat_embed id="c-12" hide_user_list="yes" hide_popup_chat="no" height="400px"]

 




POPULAR FANTASY TOOLS

#1 Expert Projections
Save 30% Now
Import Your Leagues
Props Tool
Compare Any Players
Compare Any Players
24x7 News and Alerts
RANKINGS
C
1B
2B
3B
SS
OF
SP
RP

RANKINGS

QB
RB
WR
TE
K
DEF

REAL-TIME FANTASY NEWS

Juan Soto

Could Return for Next Homestand
Corbin Carroll

Officially Back in Saturday's Lineup
Max Muncy

Hits Three Homers, Including Walk-Off Blast
Adonai Mitchell

Can Adonai Mitchell Become the Jets' WR2?
Saquon Barkley

Is Saquon Barkley Still a Safe Bet to Perform Despite His Falling Dynasty Ranking?
Michael Wilson

Varied Opinions on Michael Wilson Could Create Unique Trade Opportunities
Jake Ferguson

Accurately Priced as a Low-End TE1
Tyreek Hill

Faces Uncertain Future
Brock Bowers

Still a Top-15 Player in Dynasty Leagues Despite Injury-Plagued Season
Gavin Sheets

Goes Yard Twice, Including Walk-Off Round-Tripper
Washington Commanders

Commanders Host Omar Cooper Jr. for a Pre-Draft Visit
NFL

Makai Lemon to be a Top-20 Draft Pick This Year?
Corbin Carroll

Expected to Start on Saturday
Wyatt Langford

Forced From Friday's Game With Quad Tightness
Bijan Robinson

Falcons Pick Up Bijan Robinson's Fifth-Year Option
Kris Bubic

Dominates White Sox With 11 Strikeouts on Friday
Royce Lewis

Headed for Injured List
Mack Hollins

Can Mack Hollins Maintain a Starting Role in New England in 2026?
Clay Holmes

Removed With Hamstring Tightness
Malik Washington

Has Breakout Potential After Offseason Movement in Miami
Mike Gesicki

Is Mike Gesicki a Buy-Low Candidate After Down 2025?
Cristian Javier

Placed on 15-Day Injured List
Jayden Reed

Poised for Larger Role in Green Bay Following Offseason Movement
Matthew Golden

Does Matthew Golden Have a Clear Path to a Starting Role in His Sophomore Season?
Jaylon Tyson

Rejoins Cavaliers Lineup as Starter
Klay Thompson

Misses Friday's Game Due to Illness
Kevin Huerter

Back in Action Friday
Sam Hauser

Cleared to Play Friday
Neemias Queta

Ready to Take on Pelicans
Derrick White

Good to Go Friday
Jaylen Brown

Active on Friday
Josh Giddey

Still Out Friday
Miles McBride

Exits Knicks Lineup Friday
Mitchell Robinson

Sidelined on Friday
Norman Powell

Won't Play Against Wizards
Tyler Herro

Out on Friday
Saddiq Bey

Herbert Jones Resting Friday
Immanuel Quickley

Unavailable Friday
Julius Randle

Misses Second Straight Game
Jayson Tatum

Won't Play Friday
Jackson Chourio

Still Not Cleared to Hit
Dontayvion Wicks

Eagles Acquiring Dontayvion Wicks From the Packers
Brent Rooker

A's Place Brent Rooker on 10-Day Injured List With Oblique Strain
J.T. Realmuto

Back in Friday's Lineup
Parker Meadows

Goes on 10-Day Injured List With Broken Arm, Concussion
Seiya Suzuki

Back From the Injured List
Carlos Ulberg

A Slight Underdog
Jiří Procházka

Jiri Prochazka Can Become UFC Champion Again
Paulo Costa

Makes his Light-Heavyweight Debut
Azamat Murzakanov

Looks To Remain Unbeaten
Josh Hokit

Looks To Remain Undefeated
Curtis Blaydes

A Favorite At UFC 327
DJ Giddens

an Easily Replaceable Insurance Back
Kenny Moore II

and Colts Seeking a Trade
Hunter Henry

Could Be Impacted by NFL Draft
AJ Barner

a Mispriced Dynasty Asset
Cedric Tillman

Nearing Cut Candidacy in Dynasty Leagues
Josh Jacobs

Has a Health-Related Production Dip Left Josh Jacobs Undervalued?
Sam Carrick

to Miss Start of Playoffs
Alex Lyon

Questionable for Start of Postseason
Dakota Joshua

Unlikely to Return This Season
John Gibson

Exits Thursday's Game Due to Neck Problem
Miro Heiskanen

Uncertain for Playoffs
Brandon Hagel

Expected to Return Before End of Regular Season
Roman Josi

Nursing Upper-Body Injury
Trey Murphy III

Unavailable Against Celtics
Dejounte Murray

Remains Out Friday
Zion Williamson

Won't Suit Up Friday
Jalen Williams

Out on Friday
Jarrett Allen

Won't Play Against Hawks
Moritz Seider

has Five-Point Game on Thursday
Cole Caufield

Reaches 50 Goals
Blake Coleman

Unavailable Thursday
Quinton Byfield

Cleared to Play Thursday
Thomas Chabot

Makes Surprise Return Thursday
Luke Hughes

to Miss Rest of Season
Stuart Skinner

Faces Devils Thursday
Nazem Kadri

to "Miss Some Games" With Finger Injury
Seth Jones

to Miss Rest of Season Due to Broken Foot
Corbin Carroll

Dealing With Hip Injury, Not Expected to Miss Much Time
Brent Rooker

Exits Early on Thursday Due to Apparent Injury
Zach Benson

Scores Twice in Comeback Victory
Logan Thompson

Shuts Out the Leafs
Zach Eflin

Undergoes Successful Elbow Surgery, Will Miss Remainder of 2026
Andrei Kuzmenko

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

Won't Play Thursday
Tony DeAngelo

Expected to Return Thursday
Cole Ragans

"Should be Good" for Next Start
Reynaldo López

Reynaldo Lopez Handed Seven-Game Suspension
Jorge Soler

Suspended Seven Games, Will Appeal
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
Adam Scott

Form Points to Him Competing at Masters
Jordan Spieth

Finding Consistency Heading to Masters
Hideki Matsuyama

Trending In Right Direction For Masters
Tommy Fleetwood

a Contender if his Putter Cooperates at The Masters
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
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