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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

Larry Nance Jr.

is Questionable for Game 1 on Tuesday
OG Anunoby

is Probable for Tuesday's Game 1
Luke Kornet

is Cleared for Game 1
New Orleans Pelicans

Jamahl Mosley Agrees to Become Pelicans Next Head Coach
De'Aaron Fox

is Ruled Out for Game 1 on Monday
Ukko-Pekka Luukkonen

Set to Start Game 7
Corey Seager

Going on Injured List With Back Injury
Tage Thompson

Can Match Franchise Record With Another Multi-Point Game
Nick Suzuki

Seeks More Road Success Monday
Lane Hutson

Riding a Five-Game Assist Streak Into Game 7
Filip Gustavsson

Needs Offseason Surgery
Jeremy Peña

Jeremy Pena Reinstated and Starting on Monday Against Twins
Cam Skattebo

Dynasty Stock Rising Following NFL Draft
Kaleb Johnson

Logging First-Team Reps in OTAs
Evan Engram

Dynasty Value Fading After Production Decline in 2025
TreVeyon Henderson

Dynasty Outlook Clouded By Split Backfield in New England
Caleb Williams

' Dynasty Upside Remains Sky-High Entering 2026
Bijan Robinson

Is Bijan Robinson the No. 1 Overall Player in Dynasty Formats?
Woody Marks

Should Have Plenty of Opportunities to Catch Passes
Drew Allar

Working as QB4 in First OTA Session
Aaron Rodgers

Reports to Steelers Facilities on Monday
Alvin Kamara

Saints Remain Non-Committal on Alvin Kamara's Future
Chris Olave

Saints Continue to Work on Extension With Chris Olave
Parker Washington

a Sneaky Trade Target in Dynasty Leagues?
Melquizael Costa

Drops Decision At UFC Vegas 117
Jarquez Hunter

Can Jarquez Hunter's Dynasty Outlook Improve in Year 2?
Arnold Allen

Bounces Back
James Conner

Off the Dynasty Radar Entirely?
Elijah Arroyo

Will Elijah Arroyo Continue to Have Trouble Getting on the Field?
Daniel Santos

Suffers Second-Round TKO Loss
Tre Tucker

Not a Long-Term Solution in Dynasty Leagues
MMA

Dohoo Choi Wins His Third Consecutive Fight
Malcolm Wellmaker

Suffers His Second Loss In A Row
Juan Diaz

Scores Second-Round Submission
Christian Edwards

Defeated At UFC Vegas 117
CFB

Transfer Running Back Arnold Barnes Visiting Iowa State on Monday
Modestas Bukauskas

Gets Split-Decision Win
Jack Bech

a Dynasty Hold as New-Look Raiders Offense Takes Shape
Jaydon Blue

a Low-Value Dynasty Stash Until Depth Charts are Settled
Makai Lemon

a Top-Five Pick in Dynasty Rookie Drafts
George Kittle

a Dynasty Buy with League-Winning Potential
Jhostynxon Garcia

Expected to Join the Pirates on Tuesday
Chris Rodriguez Jr.

a Dynasty Sleeper with High Touchdown Potential
Tobias Harris

Goes Cold in Game 7 Loss
Quinn Hughes

Open to Signing Extension This Offseason
Jalen Duren

Finishes Game 7 with Quiet Line
Cade Cunningham

Endures Cold Shooting Night Sunday
Joel Eriksson Ek

Misses Second Round Due to Heel Injury
Sam Merrill

Catches Fire in Game 7 Win
Evan Mobley

Posts Versatile Double-Double in Game 7
Jonas Brodin

Sits Out Round 2 Due to Toe Injury
Donovan Mitchell

Guides Cavaliers Into East Finals
Sam Malinski

Practices Fully Sunday
Jarrett Allen

Scores 23 Points in Cavs' Game 7 Rout of Pistons
Josh Manson

Rejoins Practice
Kevin Huerter

Active on Sunday Night
Caris LeVert

Duncan Robinson, Caris LeVert Available Sunday
Dean Wade

Max Strus Replaces Dean Wade in Starting Lineup Sunday
Luke Kornet

Iffy for Monday
Larry Nance Jr.

Won't Play Sunday
De'Aaron Fox

Listed as Questionable for Monday's Action
Jalen Williams

Officially Available for Game 1 Against Spurs
Shai Gilgeous-Alexander

Named MVP for Second Straight Year
Colt Emerson

Mariners Promoting Top Prospect Colt Emerson to Major Leagues
Bones Hyland

Wants to Stay in Minnesota
Munetaka Murakami

Fantastic First Season Continues With Two More Homers
Cristopher Sánchez

Cristopher Sanchez Dazzles With 13-Strikeout Complete Game on Saturday
Blake Snell

to Undergo Elbow Surgery on Tuesday
Clay Holmes

Could Miss Around Three Months
Jose Altuve

Exits After Swing
Corey Seager

Absent With Back Spasms on Saturday
Jeremy Lauzon

Misses Saturday's Practice
Mark Stone

Doesn't Practice Saturday
Josh Manson

Misses Practice, Considered Day-to-Day
Brent Burns

Day-to-Day Ahead of Conference Finals
Cale Makar

Considered Day-to-Day
Alex Lyon

Likely to Start Game 6 Against Canadiens
Owen Power

Available Saturday
Trevor Story

Hits the Injured List With Groin Injury
Blake Snell

Likely to Need Elbow Surgery
Kyle Schwarber

on a Heater, Hits Two More Homers to Take Major-League Lead
Clay Holmes

Suffers Fractured Fibula on Friday Night
Blake Snell

Heads to 15-Day Injured List
Blake Snell

Scratched From Start on Friday for Undisclosed Reasons
Max Fried

Heading to Injured List With Elbow Bone Bruise
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
Jordan Westburg

to Have Season-Ending Elbow Surgery
Melquizael Costa

Set For UFC Vegas 117 Main Event
Arnold Allen

A Favorite At UFC Vegas 117
Daniel Santos

Set For UFC Vegas 117 Co-Main Event
MMA

Dohoo Choi Returns At UFC Vegas 117
Juan Diaz

Set To Make His UFC Debut
Malcolm Wellmaker

Looks To Bounce Back
Christian Edwards

Set For His UFC Debut
Modestas Bukauskas

Looks To Get Back In The Win Column
Tarik Skubal

Resumes Playing Catch, Ahead of Schedule?
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
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
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
RANKINGS
C
1B
2B
3B
SS
OF
SP
RP

RANKINGS

QB
RB
WR
TE
K
DEF