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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!

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

 

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

Kirk Cousins

Falcons Plan to Release Kirk Cousins
Zach Ertz

Plans to Return for 14th Season
Jameson Taillon

Can Be a Sneaky Late-Round Value
Matt Wallner

Ready for a Breakout Season?
Jaxson Hayes

Unlikely to Play Tuesday
Jonathan Kuminga

Questionable Against Wizards
Andrés Giménez

Andres Gimenez Looking for Healthy 2026
Jae'Sean Tate

to Be Re-Evaluated in Two Weeks
Ernie Clement

Expected to Play a Major Role in Toronto
Ryan Kalkbrenner

Listed as Probable Against Bulls
Tristan Vukcevic

Could Miss Second Straight Game
Chris Sale

Signs Extension With Braves
De'Anthony Melton

Could Miss Game Vs. New Orleans
Vince Williams Jr.

Feared to Have Significant Knee Injury
Grayson Allen

Questionable to Face Celtics
Jalen Suggs

Could Miss Third Straight Game
Draymond Green

Iffy for Tuesday's Matchup
Davis Thompson

Struggling to Find Birdies as Florida Looms
Kristaps Porzingis

to Miss Two More Games
Naz Reid

in Danger of Missing Another Contest
Tom Kim

Not Quite Cutting It in 2026
Deni Avdija

Won't Play Tuesday
Andrew Nembhard

Questionable Tuesday
Nicolai Hojgaard

Wants to Build Momentum from Scottsdale
Christiaan Bezuidenhout

Returns After Extended Break for Florida Event
Chet Holmgren

Might Miss Tuesday's Meeting with Toronto
Carson Fulmer

Signs Minor-League Deal With Pirates
Brent Honeywell

Signs Minor-League Contract With Giants
Graham Pauley

Undergoes Imaging for Forearm Tightness
Trevor Story

a Strong Candidate to Hit Second in 2026
Bryan Abreu

Could Begin Season as the Closer
Justin Foscue

Exits Grapefruit League Game With Hamstring Tightness
Trevor Megill

had Offseason PRP Injections
Merrill Kelly

is Awaiting MRI Results
José Berríos

Jose Berrios Feels Fully Healthy Now
CFB

Gunner Rivers Follows His Father, Commits To North Carolina State
Anfernee Simons

Ruled Out Tuesday
Pascal Siakam

Doubtful for Tuesday
Los Angeles Chargers

Bradley Bozeman Announces his Retirement
Joel Embiid

Questionable Vs. Pacers
Jaylen Brown

Considered Questionable for Tuesday
Ty Jerome

Unlikely to Play Monday
Cooper Flagg

Set to Miss Tuesday's Matchup With Nets
Will Zalatoris

Set to Make Tournament Debut at Cognizant Classic
Linus Ullmark

Available for Senators
Rasmus Hojgaard

Trending Up at the Cognizant Classic
Ryan Reaves

Sharks Activate Ryan Reaves From Injured Reserve
Charlie Lindgren

Activated From Injured Reserve Monday
Josh Norris

Cleared to Return Wednesday
Max McGreevy

Will Need to Improve on the Greens to Compete
Rico Hoey

Returns to Cognizant Classic
Austin Eckroat

Looks to Bounce Back at Cognizant Classic
Aaron Rai

Bounces Back After Rough Start to 2026 Season
Shane Lowry

Continues Playing Well Heading to Cognizant Classic
Max Homa

Has Opportunity to Continue Building Momentum at the Cognizant Classic
Ryan Gerard

Strong Approach Play Behind his Hot Start in 2026
Luke Clanton

Making Fourth Start of 2026 at Cognizant Classic
Kevin Lankinen

Unlikely to Play Wednesday
Josh Morrissey

to Miss Start of Road Trip
Mikko Rantanen

Expected to Miss Time
Jared Jones

Aiming to be Ready in Late May
Matt Brash

Not Feeling Great After Tooth Removal
Tarik Skubal

to Make One Start in World Baseball Classic
Blake Snell

Opening Day Not a Target for Blake Snell
Hagen Smith

to Face Hitters on Tuesday
Brandon Woodruff

Opening Day "Up in the Air" for Brandon Woodruff
Andrew Putnam

Looks to Jumpstart His Season at Cognizant Classic
Adam Scott

Looks For Continued Success at PGA National
Anthony Hernandez

Suffers Third-Round TKO Loss
Sean Strickland

Gets Back In The Win Column
Kyle Pitts Sr.

Falcons Planning to Use Franchise Tag on Kyle Pitts Sr.
Geoff Neal

Suffers Back-To-Back Knockout Losses
Uros Medic

Shines At UFC Houston
Dan Ige

Gets Finished For The First Time In His Career
Melquizael Costa

Extends His Win Streak To Six
NASCAR

Bubba Wallace Falls Short of Victory at EchoPark Speedway
Carson Hocevar

Rallies to Fourth At EchoPark Speedway After Early Struggles
Ross Chastain

Finishes Third At EchoPark Speedway
Chase Briscoe

Scores First Career Top-Five Finish at EchoPark Speedway
Tyler Reddick

Nabs His Second Win of the Season At EchoPark Speedway
Joey Logano

Will Be Popular DFS Pick at EchoPark Speedway
Tyler Reddick

on Pole After Qualifying Rained Out at EchoPark Speedway
Chase Elliott

Could Chase Elliott Be Worth Rostering At EchoPark Speedway?
Ryan Blaney

Is Ryan Blaney Worth Rostering for DFS at EchoPark Speedway?
William Byron

Is William Byron Worth Rostering for DFS at EchoPark Speedway?
Rondale Moore

Passes Away
Denny Hamlin

Is Worth Consideration for EchoPark Speedway DFS Lineups
Brad Keselowski

Is A Tournament Option for DFS At EchoPark Speedway
NASCAR

Is Bubba Wallace Rosterable In DFS At EchoPark Speedway?
Austin Cindric

Should DFS Managers Roster Austin Cindric at EchoPark Speedway?
Ross Chastain

Is Ross Chastain A Sneaky DFS Option for EchoPark Speedway?
Ricky Stenhouse Jr

Is Ricky Stenhouse Jr. Worth Rostering for DFS at EchoPark Speedway?
Alex Bowman

Will Start Towards the Rear At EchoPark Speedway
Javonte Williams

Cowboys Sign Javonte Williams to Three-Year, $24 Million Extension
Joel Armia

Wraps Up Olympics With Three-Point Performance
Daniil Tarasov

Available for Panthers
Evan Rodrigues

Set to Return Next Week
Aaron Ekblad

Expected to Play Thursday
Pavel Zacha

Cleared for Action
VAN

Jonathan Lekkerimaki Needs Season-Ending Shoulder Surgery
Mikko Rantanen

Misses Bronze-Medal Game With Lower-Body Injury
Blake Coleman

Activated From Injured Reserve
Matt Rempe

Heading to Injured Reserve After Second Thumb Procedure
Sidney Crosby

a Game-Time Call for Olympic Final
Josh Morrissey

Won't Play Sunday
Filip Chytil

Out Indefinitely With Facial Fracture
Connor McDavid

Makes History With Another Multi-Point Outing
Tage Thompson

Expected to Play in Olympic Final
Travis Etienne Jr.

has "Legitimate Interest" in Joining Chiefs
Zach Charbonnet

Undergoes Knee Surgery on Friday
CFB

Curt Cignetti Agrees to New Deal With Indiana, Will Earn $13.2 Million Per Year
Anthony Hernandez

Set For UFC Houston Main Event
Sean Strickland

Looks To Get Back In The Win Column
Uros Medic

Set For UFC Houston Co-Main Event
Geoff Neal

Looks To Get Back In The Win Column
Melquizael Costa

A Favorite At UFC Houston
Dan Ige

An Underdog At UFC Houston
Rashee Rice

Accused of Assault by Long-Time Girlfriend
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