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

By SD Dirk on Flickr [CC BY 2.0 (http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons

Bill Dubiel's Week 21 (2017) fantasy baseball starting pitcher (SP) matchups - starts, sits, plays and benches. MLB streamers, two start pitchers and sleepers, based on matchups.

Your friendly neighborhood @Roto_Dubs is back with his weekly starting pitcher matchups. Below are the projected starting pitching matchups for Week 21, and will be updated as more starters are announced. If you've got any questions about which pitchers can capitalize on a juicy matchup and which ones might be worth putting on the pine against a fierce offense, this is the weekly piece for you.

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. 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 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.

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SP Matchups & Start/Sit Recommendations

PROBABLE PITCHERS (8/21/17)  
GAME VISITING STARTER START/SIT HOME STARTER START/SIT
ARI@NYM Taijuan Walker SP | ARI START Robert Gsellman SP | NYM SIT
BOS@CLE Eduardo Rodriguez SP | BOS START Mike Clevinger SP | CLE SIT
LAD@PIT Alex Wood SP | LAD START Gerrit Cole SP | PIT START
MIL@SF Zach Davies SP | MIL START Chris Stratton RP | SF SIT
MIN@CHW Tim Melville SP | MIN SIT Carlos Rodon SP | CHW START
OAK@BAL Chris Smith RP | OAK SIT Wade Miley SP | BAL SIT
SEA@ATL Andrew Albers RP | SEA SIT Mike Foltynewicz SP | ATL START
TEX@LAA Cole Hamels SP | TEX START Tyler Skaggs SP | LAA SIT
PROBABLE PITCHERS (8/22/17)  
GAME VISITING STARTER START/SIT HOME STARTER START/SIT
ARI@NYM Patrick Corbin SP | ARI START Steven Matz SP | NYM SIT
BOS@CLE Doug Fister SP | BOS SIT Carlos Carrasco SP | CLE START
CHC@CIN John Lackey SP | CHC START Homer Bailey SP | CIN SIT
COL@KC Jon Gray SP | COL START Danny Duffy SP | KC SIT
LAD@PIT Edward Paredes RP | LAD SIT Jameson Taillon SP | PIT START
MIA@PHI Dan Straily SP | MIA START Nick Pivetta SP | PHI START
MIL@SF Jimmy Nelson SP | MIL START Jeff Samardzija SP | SF START
MIN@CHW Kyle Gibson SP | MIN SIT Lucas Giolito SP | CHW SIT
NYY@DET Masahiro Tanaka SP | NYY START Matthew Boyd SP | DET SIT
OAK@BAL Paul Blackburn SP | OAK SIT Ubaldo Jimenez SP | BAL START
SD@STL Clayton Richard RP | SD START Lance Lynn SP | STL START
SEA@ATL Marco Gonzales SP | SEA SIT Lucas Sims SP | ATL SIT
TEX@LAA Tyson Ross SP | TEX SIT Ricky Nolasco SP | LAA SIT
TOR@TB Marcus Stroman SP | TOR START Chris Archer SP | TB START
WAS@HOU Tanner Roark SP | WAS SIT Charlie Morton SP | HOU START
PROBABLE PITCHERS (8/23/17)  
GAME VISITING STARTER START/SIT HOME STARTER START/SIT
ARI@NYM Zack Godley RP | ARI START Chris Flexen RP | NYM SIT
BOS@CLE Drew Pomeranz SP | BOS START Corey Kluber SP | CLE START
CHC@CIN Mike Montgomery RP | CHC START TBA TBD
COL@KC Antonio Senzatela SP | COL SIT Ian Kennedy SP | KC SIT
LAD@PIT Rich Hill SP | LAD START Trevor Williams RP | PIT SIT
MIA@PHI Justin Nicolino SP | MIA SIT Zach Eflin SP | PHI SIT
MIL@SF Matt Garza SP | MIL SIT Matt Moore SP | SF START
MIN@CHW Ervin Santana SP | MIN START James Shields SP | CHW START
NYY@DET Luis Severino SP | NYY START Jordan Zimmermann SP | DET SIT
OAK@BAL Sean Manaea SP | OAK SIT Dylan Bundy RP | BAL START
SD@STL Jhoulys Chacin SP | SD START Luke Weaver SP | STL START
SEA@ATL Erasmo Ramirez RP | SEA START R.A. Dickey SP | ATL START
TEX@LAA Andrew Cashner SP | TEX START Andrew Heaney SP | LAA SIT
TOR@TB Chris Rowley RP | TOR SIT Austin Pruitt RP | TB SIT
WAS@HOU Edwin Jackson SP | WAS SIT Mike Fiers SP | HOU SIT
PROBABLE PITCHERS (8/24/17)  
GAME VISITING STARTER START/SIT HOME STARTER START/SIT
ARI@NYM Robbie Ray SP | ARI START Rafael Montero RP | NYM SIT
BOS@CLE Chris Sale SP | BOS START Trevor Bauer SP | CLE START
CHC@CIN Jake Arrieta SP | CHC START Sal Romano SP | CIN SIT
COL@KC German Marquez SP | COL START Jake Junis SP | KC SIT
LAD@PIT Hyun-Jin Ryu SP | LAD START Chad Kuhl SP | PIT SIT
MIA@PHI Vance Worley RP | MIA SIT Jerad Eickhoff SP | PHI START
MIN@CHW Jose Berrios SP | MIN START Derek Holland SP | CHW SIT
NYY@DET Jaime Garcia SP | NYY SIT Michael Fulmer SP | DET START
SD@STL Luis Perdomo SP | SD SIT Carlos Martinez SP | STL START
TEX@LAA Martin Perez SP | TEX SIT TBA TBD
TOR@TB J.A. Happ SP | TOR START Alex Cobb SP | TB START
WAS@HOU Matt Grace RP | WAS SIT Dallas Keuchel SP | HOU START
PROBABLE PITCHERS (8/25/17)  
GAME VISITING STARTER START/SIT HOME STARTER START/SIT
BAL@BOS Chris Tillman SP | BAL SIT Rick Porcello SP | BOS START
CHC@PHI Jose Quintana SP | CHC START Ben Lively SP | PHI SIT
COL@ATL Chad Bettis SP | COL START Julio Teheran SP | ATL SIT
DET@CHW Justin Verlander SP | DET START Miguel Gonzalez SP | CHW SIT
HOU@LAA Collin McHugh SP | HOU START Parker Bridwell RP | LAA START
KC@CLE Jason Hammel SP | KC SIT Danny Salazar SP | CLE START
MIL@LAD Brandon Woodruff SP | MIL SIT Kenta Maeda SP | LAD START
MIN@TOR Bartolo Colon SP | MIN SIT Nick Tepesch SP | TOR SIT
NYM@WAS Jacob deGrom SP | NYM START Max Scherzer SP | WAS START
PIT@CIN Ivan Nova SP | PIT START Robert Stephenson SP | CIN SIT
SD@MIA Travis Wood RP | SD SIT Adam Conley SP | MIA START
SEA@NYY Ariel Miranda SP | SEA SIT CC Sabathia SP | NYY SIT
SF@ARI Ty Blach SP | SF SIT Zack Greinke SP | ARI START
TB@STL Jake Odorizzi SP | TB START Michael Wacha SP | STL START
TEX@OAK A.J. Griffin SP | TEX START Kendall Graveman SP | OAK SIT
PROBABLE PITCHERS (8/26/17)  
GAME VISITING STARTER START/SIT HOME STARTER START/SIT
BAL@BOS Kevin Gausman SP | BAL SIT Eduardo Rodriguez SP | BOS START
CHC@PHI Kyle Hendricks SP | CHC START Nick Pivetta SP | PHI SIT
COL@ATL Kyle Freeland SP | COL START Sean Newcomb SP | ATL SIT
DET@CHW Anibal Sanchez SP | DET SIT Carlos Rodon SP | CHW START
HOU@LAA Brad Peacock SP | HOU SIT Tyler Skaggs SP | LAA SIT
KC@CLE Jason Vargas SP | KC START Mike Clevinger SP | CLE START
MIL@LAD Chase Anderson SP | MIL SIT Alex Wood SP | LAD START
MIN@TOR Dillon Gee RP | MIN SIT Marco Estrada SP | TOR START
NYM@WAS Robert Gsellman SP | NYM SIT Stephen Strasburg SP | WAS START
PIT@CIN Gerrit Cole SP | PIT START Luis Castillo SP | CIN START
SD@MIA Dinelson Lamet SP | SD START Dan Straily SP | MIA SIT
SEA@NYY Yovani Gallardo SP | SEA SIT Sonny Gray SP | NYY START
SF@ARI Madison Bumgarner SP | SF START Taijuan Walker SP | ARI START
TB@STL Blake Snell SP | TB SIT Mike Leake SP | STL SIT
TEX@OAK Cole Hamels SP | TEX START Jharel Cotton SP | OAK SIT
PROBABLE PITCHERS (8/27/17)  
GAME VISITING STARTER START/SIT HOME STARTER START/SIT
BAL@BOS Ubaldo Jimenez SP | BAL SIT Doug Fister SP | BOS SIT
CHC@PHI John Lackey SP | CHC START Aaron Nola SP | PHI START
COL@ATL Jon Gray SP | COL START Mike Foltynewicz SP | ATL SIT
DET@CHW Matthew Boyd SP | DET SIT Carson Fulmer RP | CHW SIT
HOU@LAA Charlie Morton SP | HOU START Ricky Nolasco SP | LAA SIT
KC@CLE Danny Duffy SP | KC SIT Carlos Carrasco SP | CLE START
MIL@LAD Zach Davies SP | MIL START Edward Paredes RP | LAD SIT
MIN@TOR Kyle Gibson SP | MIN SIT Marcus Stroman SP | TOR START
NYM@WAS Steven Matz SP | NYM SIT Gio Gonzalez SP | WAS START
PIT@CIN Jameson Taillon SP | PIT START Homer Bailey SP | CIN SIT
SD@MIA Clayton Richard RP | SD START Jose Urena RP | MIA START
SEA@NYY Andrew Albers RP | SEA SIT Masahiro Tanaka SP | NYY START
SF@ARI Chris Stratton RP | SF SIT Patrick Corbin SP | ARI START
TB@STL Chris Archer SP | TB START Lance Lynn SP | STL START
TEX@OAK Tyson Ross SP | TEX SIT Chris Smith RP | OAK SIT

 

More Week 21 Lineup Prep




REAL-TIME FANTASY NEWS

Kevin Huerter

is Available for Game 6
Duncan Robinson

is Returning for Game 6
Caris LeVert

is Cleared for Game 6 on Friday
OG Anunoby

Practices in Full on Friday
Terrence Shannon Jr.

is Tagged as Questionable for Friday
Blake Snell

Scratched From Start on Friday for Undisclosed Reasons
Luther Burden III

Does Luther Burden III Have WR1 Dynasty Upside in Chicago?
MarShawn Lloyd

Can MarShawn Lloyd Emerge as a Top Dynasty Handcuff Option?
Emanuel Wilson

Can Emanuel Wilson Carve Out a Consistent Role in Seattle?
Max Fried

Heading to Injured List With Elbow Bone Bruise
Jaylin Noel

Playing-Time Outlook in Houston Remains Unclear
Dylan Sampson

Role in Cleveland Looks Secure Heading into 2026
Kirk Cousins

' Dynasty Value Fading Ahead of First Season in Las Vegas
CFB

Julian Sayin Looking To Build Off Of Strong Debut Season
CFB

College GameDay Set for First Three Weeks
CFB

Jeremiah Smith Aiming For Ohio State Receiving Records
CFB

Keshaun Singleton Projects as Auburn's WR1
CFB

Jeremiah Cobb Impresses New Auburn Staff
CFB

Alberto Mendoza Very Likely to Start for Georgia Tech
CFB

Charles Woodson Jr. Commits to Michigan
George Holani

Dynasty Outlook Remains Cloudy
Jordan Westburg

to Have Season-Ending Elbow Surgery
Kendre Miller

Quickly Fading From Fantasy Relevance
Keon Coleman

Is Keon Coleman a Hopeless Dynasty Asset?
Marvin Harrison Jr.

a Buy-Low Candidate in Dynasty Formats
Hollywood Brown

a Cut Candidate in Dynasty Leagues?
Darnell Mooney

Barely Inside Top-100 WR Dynasty Rankings
Melquizael Costa

Set For UFC Vegas 117 Main Event
Arnold Allen

A Favorite At UFC Vegas 117
Christian Kirk

Can Christian Kirk Revive his Career in Bay Area?
Daniel Santos

Set For UFC Vegas 117 Co-Main Event
Brashard Smith

Destined to Become Special Teams Player?
MMA

Dohoo Choi Returns At UFC Vegas 117
Ben Sinnott

Dynasty Value Hindered by Free-Agent TE Addition
Juan Diaz

Set To Make His UFC Debut
Sam Darnold

Should Dynasty Managers Continue to Hold Sam Darnold?
Malcolm Wellmaker

Looks To Bounce Back
Justin Fields

Dynasty Managers Getting Ready to Sell High on Justin Fields?
Christian Edwards

Set For His UFC Debut
Dallas Goedert

a Target for Dynasty Managers in Championship Window?
Modestas Bukauskas

Looks To Get Back In The Win Column
Theo Johnson

Not the Primary Option in New System?
Kyle Monangai

Still Time to Buy Low on Kyle Monangai in Dynasty Leagues?
Tarik Skubal

Resumes Playing Catch, Ahead of Schedule?
Amon-Ra St. Brown

an Unheralded Dynasty Cornerstone
Karl-Anthony Towns

Making an Impact as Playmaker in Playoffs
Jalen Duren

Determined to Improve
Kevin Huerter

Tagged as Questionable for Game 6 Against Cavaliers
Caris LeVert

Considered Questionable for Friday
Duncan Robinson

Iffy for Game 6
Lane Hutson

Contributes Two Assists in Game 5 Victory
Nick Suzuki

Amasses Three Points in Crucial Victory Thursday
Juraj Slafkovsky

Dishes Out Three Assists in Game 5 Win
Carter Hart

Stops 31 Pucks in Series-Clinching Win
Pavel Dorofeyev

Enjoys Second Consecutive Multi-Goal Game
Shea Theodore

Records Two Points in Game 6 Win
Mitchell Marner

Scores Special Goal in Series-Clincher
Ryan Johnson

Takes Over as Canucks GM, Sedins Promoted to Co-Presidents
Drew Helleson

Won't Play Thursday
Radko Gudas

Unlikely to Play Thursday
Jeremy Lauzon

Remains Out Thursday
Mark Stone

Misses Third Consecutive Game
EDM

Kris Knoblauch Fired as Oilers Head Coach
CFB

Virginia Tech Lands Commitment from Four-Star QB Peter Bourque
Byron Buxton

Scratched on Thursday With Hip Soreness
Cal Raleigh

Heading to Injured List With Oblique Strain
Francisco Alvarez

has Knee Surgery, Expected to Miss Eight Weeks
Paul Reed

Makes Big Impact Off the Bench Wednesday
Daniss Jenkins

Contributes 19 Points As Starter
Cade Cunningham

Tallies 39 Points in Losing Effort
Max Strus

Notches 20 Points With Six Triples
Evan Mobley

Close to Triple-Double Wednesday
Jarrett Allen

Records Double-Double in Game 5 Win
James Harden

Leads the Way for Cavaliers in Game 5 Victory
Quinn Hughes

Finishes Postseason With 15 Points
Matt Boldy

Posts Two Assists in Season-Ending Loss
Scott Wedgewood

Perfect in Relief Effort
Martin Necas

Records Another Multi-Point Game
Brett Kulak

Sends Avalanche Into Conference Finals
Brayden McNabb

Suspended for One Game
Cal Raleigh

Exits With Apparent Side Injury on Wednesday Night
Juan Soto

X-Rays Come Back Negative on Juan Soto's Ankle
Jacob Misiorowski

Pulled Early With Possible Leg Injury
Juan Soto

Exits Wednesday's Game Early with Ankle Injury
Kevin Huerter

is Cleared to Return for Game 5
Caris LeVert

is Available for Game 5 on Wednesday
Duncan Robinson

is Out for Game 5
Keegan Murray

Undergoes Ankle Procedure
Pete Fairbanks

Returns From Injured List
Christian Yelich

Out With Back Tightness on Wednesday Night
Nathan MacKinnon

Chasing History Wednesday
Ryan Poehling

Won't Be an Option for Game 6
Robby Snelling

Placed on 15-Day Injured List with Elbow Sprain
Francisco Alvarez

Mets Place Francisco Alvarez on Injured List With Torn Meniscus
Max Fried

Dealing With Left Elbow Posterior Soreness
CFB

NFL Veteran Tom Moore Joins Iowa Coaching Staff
CFB

Can Cam Cook Dominate in Return to Big 12?
CFB

ACC, Big 12 Support 24-Team College Football Playoff
CFB

Anthony Colandrea Looking to Elevate Nebraska Back to National Contention
CFB

Kwazi Gilmer Set for Big Impact at Nebraska
Justin Thomas

Trending Well Ahead of PGA Championship Despite Concerning Form
J.J. Spaun

Trending Up Ahead of PGA Championship
Adam Scott

Riding Strong Form Into PGA Championship
Patrick Reed

Looking to Make Another Run at PGA Championship
PGA

Sungjae Im Looks to Build on Strong Finish at Truist Championship
Sam Burns

Must Keep Ball in Play at PGA Championship
Jordan Spieth

Looks to Complete Career Grand Slam at Aronimink
Brandt Snedeker

Not the Best Option for the PGA Championship
Rasmus Hojgaard

a Volatile Option at PGA Championship
Maverick McNealy

Seeking Better Start in Philadelphia
Harry Hall

a Boom-or-Bust Option at Aronimink
Hideki Matsuyama

Attempts to Improve Over 2025 PGA Championship
Scottie Scheffler

Looks to Defend PGA Championship at Aronimink
Nicolai Hojgaard

Wants to Keep Momentum Rolling in Philadelphia
Ben Griffin

Attempting to Bounce Back After Truist Championship
CFB

Transfer Defensive Lineman Devarrick Woods Commits to Clemson
Harris English

Will Need His Putter to Thrive at Aronimink
Akshay Bhatia

Creative Flair Could Show Itself in Philadelphia
Keegan Bradley

Knows the Aronimink Golf Club Well
Si Woo Kim

Struggles at Truist Championship
Gary Woodland

Can Continue Incredible 2026 Season at PGA Championship
Xander Schauffele

In Excellent Form Heading to PGA Championship
Brandon Nimmo

Leaves Game on Tuesday with Apparent Ankle Injury
Jacob Wilson

A's Place Jacob Wilson on Injured List With Shoulder Subluxation
Christian Yelich

Brewers Reinstate Christian Yelich From Injured List
CFB

Isaac Brown Has All-American Upside in 2026
CFB

Nyck Harbor Heading into Breakout Year?
CFB

Notre Dame, USC in Discussions to Resume Rivalry Series
CFB

Jaron-Keawe Sagapolutele Has Eyes on ACC Title
CFB

Ahmad Hardy's Gunshot Wound Not Viewed as Career-Threatening
A.J. Ewing

Mets to Call Up Top Prospect A.J. Ewing
Mookie Betts

is Officially Back on Monday
Khamzat Chimaev

Suffers his First Loss
Sean Strickland

Recaptures Middleweight Title
Tatsuro Taira

Suffers Fifth-Round TKO Loss
Joshua Van

Defends Flyweight Title
MMA

Waldo Cortes-Acosta Drops Decision
Alexander Volkov

Wins Back-To-Back Fights
Shane Van Gisbergen

Dominates Watkins Glen for First Win of 2026
Michael McDowell

Finishes Second for Best Run of the Year At Watkins Glen
Ty Gibbs

Scores New Career-Best Finish of Third at Watkins Glen
Tyler Reddick

Continues His Strong Season With Fifth-Place Run at Watkins Glen
Austin Dillon

Earns his First Top-10 Finish of 2026 at Watkins Glen
CFB

Ahmad Hardy Sustains Gunshot Wound, in Stable Condition
Connor Zilisch

Will Start Fifth in his First Watkins Glen Cup Series Race
Tyler Reddick

Is A Top DFS Option for Watkins Glen Lineups
Christopher Bell

Is Likely to Bounce Back This Week at Watkins Glen
William Byron

Is William Byron Playable in DFS Lineups at Watkins Glen?
Kyle Larson

May have A Positive Day at Watkins Glen
Chase Briscoe

May Compete for A Top-10 Finish at Watkins Glen
NASCAR

A.J. Allmendinger May have Another Solid Outing at Watkins Glen
Ty Gibbs

Should Fantasy Managers Roster Ty Gibbs at Watkins Glen?
Ross Chastain

Is Ross Chastain Worth Rostering for Watkins Glen Lineups?
Austin Cindric

Could Austin Cindric be A Sneaky Tournament Play for Watkins Glen?
Shane Van Gisbergen

Shane van Gisbergen the Heavy Favorite at Watkins Glen
Chase Elliott

Is Chase Elliott a No-Brainer DFS Pick at Watkins Glen?
Chris Buescher

Qualifies 14th at Watkins Glen
Ryan Blaney

Has Upside at Watkins Glen After Signing Contract Extension
Michael McDowell

Still Searching for First Top-Five Finish at Watkins Glen
Carson Hocevar

Is Carson Hocevar Too Aggressive for Road-Course Racing?
RANKINGS
C
1B
2B
3B
SS
OF
SP
RP

RANKINGS

QB
RB
WR
TE
K
DEF