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Week 23 Starts & Sits - All Starting Pitcher Matchups

Nick Mariano's recommended fantasy baseball starts and sits for all Week 23 starting pitcher matchups. Unearth potential streamers, two-start SPs and sleepers.

There's no running from the endgame now -- it's September, baby. The month where fantasy baseball dreams are made and broken. Bidding wars for streamers and two-start arms intensify as each matchup inches you closer to glory with that finish line in sight, so it's paramount you look at least two steps ahead. To assist your quest for gold, we here at RotoBaller offer our analysis and dynamic pitching scores for each matchup to frame your start/sit decisions. In case you missed it, this is our sixth year now writing this weekly column, helping fantasy baseball managers pick the best pitchers weekly.

Below are the projected starting pitching matchups for Week 23 -- September 2nd through September 8th -- which will be updated as rotations are announced and tweaked. This column will be continuously updated and adjusted for any postponements or rotation shuffles, reflecting official beat writer speculation for as many unconfirmed rotation slots as possible.

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 identify some sneaky streams. Let's win some leagues!

 

SP Matchups & Start/Sit Recommendations

This weekly piece considers the pitcher’s opponents, their outlook against lefties and righties, 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.

Score values typically range from about 40-60, with higher values being superior. A 50 is the theoretical "Start/Sit" cutoff, but you should use the color-coded scores for valuable context to make your own decisions. Streamers and those relying on counting stats more than all-around ratios can target 48s and 49s, for example. Those set for two-start weeks are highlighted in yellow. Openers will have an asterisk if no "true" starter is announced by team beat writers.

This column will be updated daily as more rotations and starters are announced through September 8th.

More Fantasy Baseball Analysis




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REAL-TIME FANTASY NEWS

Odell Beckham Jr.

Plans to Play in 2026
RJ Harvey

Ready for a Year 2 Jump?
Baker Mayfield

Buccaneers Expected to Discuss Extension With Baker Mayfield This Offseason
Brian Robinson Jr.

Falcons to Sign Brian Robinson Jr.
Joey Bosa

a Good Fit for the 49ers?
Lavonte David

Hanging Up his Cleats
Maxx Crosby

Dealing With Degenerative Knee Condition?
Roki Sasaki

to Stick in Rotation Despite Spring Struggles
Kevin McGonigle

Makes Tigers Opening Day Roster
Scottie Scheffler

Withdraws From Texas Children's Houston Open
James Reimer

Picks Up Victory Against Rangers
San Francisco 49ers

Denzel Boston Visiting With 49ers on Tuesday
Matthew Stafford

a Great Option for Those in Win-Now Mode
Breece Hall

Dynasty Ceiling Capped in New York?
Jaylen Waddle

Restructures his Contract With Broncos
Ryan Pepiot

Placed on Injured List to Open the Season
Trevor Siemian

Signing With the Falcons
J.J. Wetherholt

JJ Wetherholt Likely to Hit Leadoff on Opening Day
Connelly Early

to Make First Start on Sunday
Tucker Kraft

a Post-Injury Buy-Low Candidate
Jakobi Meyers

Vying for Top Spot in Jacksonville Receiver Room
Jayden Higgins

Faces Obstacles in Second Season
Sam LaPorta

New Offensive Philosophy Could Help Sam LaPorta Get Back into Top Tier
Jaylon Tyson

Unavailable Against Magic
Noah Gray

Remains Buried on Kansas City Depth Chart
Jarrett Allen

Still Out Tuesday
Anthony Black

Remains Out Tuesday
Jalen Suggs

to Miss Second Consecutive Game
Kon Knueppel

Probable Tuesday
Nique Clifford

Kings Plan to Re-Evaluate Nique Clifford in One Week
Moses Moody

Stretchered Off With Knee Injury
Luke Clanton

Might Have a Problem in Houston
Sam Stevens

Happy to See Houston This Week
Keith Mitchell

Tries to Rebound After The Players Championship
Will Zalatoris

Returning This Week at Houston
Wyndham Clark

Trending in the Wrong Direction Heading to Houston
Shane Lowry

Seeking Better Luck in Houston This Weekend
Kurt Kitayama

Poised to Bounce Back at the Houston Open
Jake Knapp

More Suited for a Course Like the Houston Open
Tony Finau

Continues Playing Well Heading to Texas Children's Houston Open
Scottie Scheffler

Returns to Action for Texas Children's Houston Open
Sam Burns

Looks to Carry Momentum Into Houston
Pete Crow-Armstrong

Cubs, Pete Crow-Armstrong Finalizing Long-Term Extension
Shane Pinto

Opens Scoring Versus Rangers
Milwaukee Bucks

Bucks Waive Cam Thomas
Kyle Kuzma

Won't Play Against Clippers
John Collins

Misses Monday's Action
Kawhi Leonard

Available Monday Night
Caleb Martin

Brandon Williams Remain Out Monday
Brandon Ingram

a Late Scratch Versus Jazz
Sahith Theegala

to Rebound at Texas Children's Houston Open
De'Anthony Melton

Moses Moody, De'Anthony Melton Available Monday
Kristaps Porzingis

Ready to Rock Monday
Cody Williams

Ruled Out Monday
Immanuel Quickley

Jamal Shead Starting With Immanuel Quickley Out
Stephan Jaeger

Hopes to Jumpstart Season at Texas Children's Houston Open
Collin Murray-Boyles

Rejoins Raptors Lineup
Adam Scott

Hopes to Get Back on Track in Houston
Drake Powell

Slated to Miss Monday's Matchup With Portland
Peyton Watson

Ruled Out Tuesday
Blake Snell

Targeting a May Return
Obi Toppin

Cleared to Play Against Magic
PGA

Sungjae Im Looks to Carry Hot Play to Houston
Nicolai Hojgaard

to Get Back on Track in Houston
Hunter Greene

Reds Place Hunter Greene on 60-Day Injured List
Chris Gotterup

to be a Popular Choice at Texas Children's Houston Open
Blake Whiteheart

Returns to the Browns
Min Woo Lee

Looks to Keep Strong Season Going in Title Defense in Houston
J.J. Wetherholt

JJ Wetherholt Makes Cardinals Opening Day Roster
NFL

Ty Simpson Expected to be a First-Round Pick
Jake Bobo

Seahawks Match Offer Sheet for Jake Bobo
Tommy DeVito

Becomes QB2 in New England
Nick Pivetta

to Start on Opening Day for Padres
Brandon Woodruff

Makes Brewers Opening Day Rotation
Zack Wheeler

to Start Rehab Assignment on Saturday
Carson Benge

Makes Mets Opening Day Roster
Seiya Suzuki

to Start the Season on the Injured List
Lerone Murphy

Suffers His First Loss
Dennis Santana

Won't be Pirates' Primary Closer
Movsar Evloev

Edges Out Lerone Murphy
CFB

Notre Dame Ranks No. 1 in Returning Production for 2026
Michael Aswell

Jr. Drops Decision At UFC London
Michael Aswell

Luke Riley Outclasses Michael Aswell Jr.
Sam Patterson

Suffers Unanimous-Decision Loss
Michael Page

Wins Lackluster Decision
Austen Lane

Suffers First-Round TKO Loss
Spencer Strider

to Start the Season on Injured List
Iwo Baraniewski

Delivers 28-Second TKO
Lawson Crouse

Picks Up Three Points in Overtime Win
Filip Forsberg

Takes Predators Past Blackhawks
Alex Ovechkin

Scores 1,000th Career Goal
Nate Schmidt

Exits Early Due to Illness
Matt Grzelcyk

to Miss Four-Game Road Trip
Mikko Rantanen

to Return to Full Practice
A.J. Greer

Handed a Three-Game Suspension
Troy Terry

Wins it for Anahiem
Tyler Reddick

Overcomes Adversity for Fourth Victory of the Season At Darlington
Brad Keselowski

Falls Short of Darlington Victory Despite Domination
Ryan Blaney

Recovers From Pit-Road Struggles to Score Career-Best Darlington Finish
Carson Hocevar

Rallies to Finish Fourth at Darlington
Kyle Larson

Decent Performance Ends with Technical Issues At Darlington
Ilya Sorokin

Earns Shutout Over Columbus
Ethen Frank

Sustains Lower-Body Injury Sunday
Grayson Rodriguez

to Open Season on Injured List
Brett Pesce

Questionable to Return This Season
Stefan Noesen

Done for the Season
Yan Kuznetsov

Misses Fourth Consecutive Game Sunday
Connor Zary

Out Sunday
Mike Trout

Returns on Sunday
Anthony Duclair

Misses Sunday's Game
Ryan Pulock

Unavailable Sunday
Nick Lodolo

Exits Early With a Blister
Jeremy Peña

Astros Not Ruling Out Jeremy Pena for Opening Day
Cristopher Sánchez

Phillies Sign Cristopher Sanchez to a Six-Year Extension
Tyler Reddick

the Clear Favorite at Darlington
Kyle Larson

a High-Risk, High-Reward Driver at Darlington
Ryan Blaney

Is Getting Better at Darlington
NASCAR

Bubba Wallace Not Slowing Down at Darlington
Chris Buescher

Should be a Top-10 Contender at Darlington
Austin Cindric

a Sleeper at Darlington
Erik Jones

Quickest in Practice at Darlington
Morgan Geekie

Records Three Assists Against Red Wings
Steven Stamkos

Notches Three Points in Win Over Golden Knights
Cole Caufield

Records Career-High Five Points in Saturday's Win
Denny Hamlin

Qualifies Ninth for this Week's Cup Race at Darlington
Chase Briscoe

Is One of the Top DFS Options of the Week for Darlington
William Byron

Is William Byron A Playable DFS Option for Darlington Lineups?
Christopher Bell

Could Christopher Bell be Considered A Decent DFS Option for Darlington?
Chase Elliott

Is Chase Elliott Worth Rostering At Darlington This Week For DFS?
Joey Logano

May Not Have the Speed to Warrant A Darlington DFS Lineup Spot
Ross Chastain

Should DFS Players Trust Ross Chastain at Darlington?
Kyle Busch

Could Kyle Busch Be A Worthy DFS Option for Darlington?
Brad Keselowski

May be A Contriarian DFS Tournament Option At Darlington
Lerone Murphy

Set For UFC London Main Event
Movsar Evloev

Looks To Remain Unbeaten
Michael Aswell

Jr. An Underdog At UFC London
Luke Riley

Set For UFC London Co-Main Event
Sam Patterson

Looks To Extend His Win Streak
Michael Page

Set For Welterweight Bout
Austen Lane

In Dire Need Of Victory
Iwo Baraniewski

A Favorite At UFC London
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