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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 lineup 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




POPULAR FANTASY TOOLS

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24x7 News and Alerts

REAL-TIME FANTASY NEWS

Dak Prescott

Will Play in Week 18
Mitchell Robinson

Sidelined Against New Orleans
Jalen Johnson

Under The Weather, Ruled Out on Monday
Lamar Jackson

Week 18 Status "to be Determined"
Khris Middleton

Resting Versus Phoenix
Kyshawn George

Out Again on Monday
Isaiah Hartenstein

Won't Suit Up On Monday
Alperen Sengün

Alperen Sengun Sitting Out Another Game Monday
Trae Young

Ruled Out Monday
Joe Mixon

Won't Return This Season
T.J. Watt

a Long Shot to Play in Week 18?
CFB

Penn State Working to Hire D'Anton Lynn as Next Defensive Coordinator
Joe Burrow

Will Play in Week 18 Against the Browns
CFB

Omar Cooper Expected to be Full-Go for Rose Bowl
CFB

Marcus Freeman Staying with Notre Dame for 2026 Season
CFB

Star Wideout Cam Coleman Entering Transfer Portal
Luther Burden III

Set to Undergo Additional Testing on Quad Injury
Trae Young

Questionable Monday With Quad Contusion
Kirill Marchenko

Scores Twice in Sunday's Win
Josh Giddey

Expected to Suit Up Monday
Alperen Sengün

Alperen Sengun Could Miss Another Game Monday
Justin Brazeau

Pots First Career Hat Trick Sunday
Anthony Davis

Listed as Questionable for Monday
Juraj Slafkovsky

Collects Season-High Three Points in Sunday's Loss
Jalen Suggs

Poised to Miss Seventh Straight Game
Eeli Tolvanen

Continues Scoring Surge With Three-Point Effort
Grayson Allen

Misses Sixth Straight Game Monday
Jack Eichel

to Remain Out Monday
Adam Fox

Nearing Return, Considered Day-to-Day
Josh Morrissey

Considered Day-to-Day After Missing Practice
D'Andre Swift

Finds End Zone Twice in Sunday Night Loss
Luther Burden III

Posts Season-High 138 Yards, Touchdown in Loss
Christian McCaffrey

Racks Up 181 Total Yards, Touchdown in Win Over Bears
Brock Purdy

Delivers Second Straight Five-Touchdown Performance
De'Aaron Fox

Questionable Against the Cavaliers
Bam Adebayo

Expected Back on Monday Night
Kon Knueppel

Won't Suit Up Against Milwaukee
Ryan Kalkbrenner

Still Out on Monday
Parker Washington

Leads Jaguars in Targets, Receptions, and Receiving Yards
Wan'Dale Robinson

Posts Season-High 11 Receptions in Week 17
Josh Allen

Seen Limping From X-Ray Room, Says Foot Injury Didn't Affect Him
Geno Smith

Diagnosed With High-Ankle Sprain
John Collins

Won't Face the Pistons on Sunday Night
Trey McBride

Sets All-Time Tight End Receptions Record
Geno Smith

Exits Early With Ankle Injury
DJ Moore

Suiting Up Against 49ers on Sunday Night
Ricky Pearsall

Officially Active for Week 17 Against Bears
George Kittle

Officially Inactive for Week 17
Ja'Marr Chase

Snags Two Touchdowns in Week 17
Geno Smith

Questionable to Return With Ankle Injury
Matthew Tkachuk

Returns to Practice
Linus Ullmark

Takes Leave of Absence
Travis Sanheim

Good to Go Against Kraken
Kyshawn George

Ruled Out on Sunday
Nick Foligno

Set to Return Sunday
Jock Landale

Out Again on Sunday
William Nylander

Out Against Red Wings
Jared McCann

Available Sunday
Vince Dunn

on Track to Return Sunday
Blake Lizotte

Activated From Injured Reserve
Tyler Herro

Showing Progress but Still Without Timetable
CFB

Jay Hill Expected to be Next Michigan Defensive Coordinator
Andrei Svechnikov

Extends Scoring Run With Three-Point Effort
Auston Matthews

Bags Three Points Saturday Night
Alex Laferriere

Records First Career Hat Trick
William Nylander

Sustains Lower-Body Injury Saturday
Zach Werenski

Unlikely to Play Sunday
Jake Evans

to Miss 4-6 Weeks
CFB

Michigan Targeting Kyle Whittingham as Next Head Coach
CFB

Texas Leading Rusher Quintrevion Wisner Set to Transfer
Pete Fairbanks

Marlins Agree on One-Year Deal
Brooks Koepka

Leaving LIV Golf
Ryan O'Hearn

Pirates Agree on Two-Year Deal

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