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Fantasy Baseball Advice: Undervalued Starting Pitchers (Week 21)

Reid Contini's fantasy baseball advice and waiver wire pickups for MLB starting pitchers in week 21. RotoBaller.com helps you win your fantasy leagues!

In this piece, RotoBaller will highlight a selection of starting pitchers owned in less than 75% of both CBS and Yahoo leagues that have favorable matchups in the upcoming week. Whether you’re suffering from injuries, poor performance, or your league’s fantasy baseball waiver wire is barren, these undervalued pitchers could prove useful in the days ahead.

 

8/19: Dillon Gee (NYM) @ Minnesota Twins (Kyle Gibson)

rotoballer-fantasy-baseball-advice-dillon-geeCBS Ownership: 54%, Yahoo Ownership: 22%

We recommended Gee last week against the white-hot Dodgers, but made sure to attach a caveat about New York’s inability to produce much in the victory department. As things turned out, Gee allowed just two earned runs over six innings and left the game in line for a win, but the Mets’ bullpen blew the lead and the hard luck righty was left with a no-decision despite his fifth quality start in his past six appearances. Regardless of his supporting cast, Gee squares off against the weak-hitting Twins on Monday afternoon and should be started in most formats.

 

8/20: Rick Porcello (DET) vs. Minnesota Twins (Mike Pelfrey)

CBS Ownership: 62%, Yahoo Ownership: 21%

A perennial disappointment, Porcello has overcome a shaky start to the season by posting quality starts in seven of his past eight appearances dating back to late June. For some reason his consistency hasn’t moved the fantasy ownership needle too much, so take advantage: Porcello versus the Twins is as good an option as you could hope to find on the waiver wire at this critical point in the season.

 

8/20: Sonny Gray (OAK) vs. Seattle Mariners (Joe Saunders)

CBS Ownership: 34%, Yahoo Ownership: 18%

The recently called up Gray has been outstanding since joining the Oakland rotation, allowing just two earned runs over 14 IP with a 14:4 K:BB ratio in starts versus Toronto and Houston. A 2011 first-round pick, the slightly-built Vanderbilt product primarily relies upon an explosive four-seam fastball with movement in addition to a sharp breaking ball. Combined with good mechanics and an advanced pitching IQ, the young righty has been compared to Tim Hudson and Roy Oswalt. With Bartolo Colon headed to the DL, Gray will have a rotation spot for the foreseeable future and has a real chance to be a factor in the fantasy playoffs.

 

8/21: Jake Arrieta (CHC) vs. Washington Nationals (Ross Ohlendorf)

CBS Ownership: 7%, Yahoo Ownership: 1%

Arrieta has always possessed terrific stuff, but his inability to fully harness it is what ultimately led to the Orioles trading him to the Cubs back in early July. Sent to the minors to continue refining his game, Arrieta was terrific in a spot start versus Milwaukee on July 30th before totally dominating the Cardinals over seven shutout innings in another spot appearance on Friday. Arrieta has now all but sown up a chance to audition for a 2014 rotation spot, and that journey continues with a start against the Nationals on Wednesday night. The idea that Arrieta could hold deep league fantasy value down the stretch isn’t as far-fetched as you might think.

 

==========

If you want this article and other high-end fantasy baseball analysis delivered to you on a daily basis, sign up for our daily newsletter. And be sure to check out Rotoballer.com’s Fantasy Baseball Waiver Wire Pickups list for in-depth analysis on gems that you may be able to find sitting on your waiver wire.  It’s one of the best fantasy baseball features currently on web.

 




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REAL-TIME FANTASY NEWS

C.J. Stroud

to Miss Another Game
Jonathan Kuminga

Remains Out Tuesday
Keegan Murray

Could Make his Season Debut This Week
Caris LeVert

Liston as Out on Tuesday
Tobias Harris

Could Return Thursday
Ausar Thompson

Questionable Again on Tuesday
Joe Mixon

Uncertainty Remains Around Joe Mixon's Return Timeline
Cade Cunningham

is Questionable Tuesday in Atlanta
Jaylen Warren

Mike Tomlin Optimistic About Jaylen Warren's Availability for Week 12
C.J. Stroud

Not Expected to Play on Thursday Night
Aaron Rodgers

Won't Need Surgery on Fractured Wrist, Could Play in Week 12?
Davis Mills

Prepping for Third Straight Start in Week 12?
CFB

Sam Leavitt Set to Enter Transfer Portal?
Mason Rudolph

Could Make His First Start of 2025 in Week 12
Brock Wright

Sets Career-High in Targets; Lined Up for More Work?
Stephon Castle

Out Against Grizzlies
Kimani Vidal

Struggles Again and Faces Role Uncertainty After Bye
Dak Prescott

in Full Command Monday Night With Four Touchdown Passes
Quentin Johnston

Posts Zero Catches During Offensive Collapse
George Pickens

Erupts for 144 Yards, Touchdown in Monday Night Win
Jrue Holiday

Unlikely to Play Tuesday
CeeDee Lamb

George Pickens Benched for First Drive
LeBron James

Officially Listed as Questionable for Tuesday
Jose Altuve

Undergoes Foot Surgery
Giannis Antetokounmpo

Exits Monday's Game With Groin Injury
Julian Strawther

Out on Monday
Cameron Johnson

Cleared for Action Monday
Nikola Jokić

Nikola Jokic Available Against Bulls
Zaccharie Risacher

Considered Questionable for Tuesday's Game
Onyeka Okongwu

Iffy for Tuesday
Kristaps Porzingis

May Miss Another Game Tuesday
Jalen Suggs

Listed as Questionable for Tuesday
Paolo Banchero

to Remain Out Tuesday
Ayo Dosunmu

Playing on Minutes Restriction Monday
Tre Jones

Still Out Monday
Saddiq Bey

Won't Play Against OKC
Alex Singleton

Broncos Optimistic Patrick Surtain, Alex Singleton Will Return After the Bye
Trey Hendrickson

Doubtful Again in Week 12
Shedeur Sanders

Expected to Make First Career Start in Week 12
Josh Jacobs

Dealing With Knee Contusion
Mikael Granlund

Unavailable Monday
Alex Bregman

Red Sox Going for Either Alex Bregman or Pete Alonso?
Conor Garland

Misses Monday's Game
Eetu Luostarinen

Out on Monday
Drake London

Considered "Week-to-Week"
Drew Doughty

Listed as Week-to-Week
Ja'Marr Chase

Being Suspended for One Game for Unsportsmanlike Conduct
John Carlson

a Game-Time Call Monday
Viktor Arvidsson

Out Week-to-Week
Charlie McAvoy

Out Against Hurricanes
CFB

James Franklin to be Virginia Tech's Next Head Coach
Brandon Aiyuk

49ers Won't Open Brandon Aiyuk's Practice Window This Week
Joe Burrow

Could Do 11-on-11 Work This Week in Practice
CFB

Fernando Mendoza the Clear Heisman Trophy Favorite?
CFB

Beau Pribula Has Chance to Face Oklahoma on Saturday
Mitchell Marner

Establishes Vegas Record Sunday
Mats Zuccarello

Logs Two Assists in Overtime Victory
Lucas Raymond

Leads Red Wings to Victory at MSG
Quinn Hughes

Delivers Four Assists in Sunday's Win
Conor Garland

Limited to Handful of Minutes Sunday
Ryan Hartman

Suffers Lower-Body Injury
Adrian Kempe

Agrees to $85 Million Extension With Kings
Jack Della Maddalena

Gets Dominated
Islam Makhachev

Claims UFC Welterweight Belt
Zhang Weili

Gets Outclassed
Valentina Shevchenko

Wins Unanimous Decision At UFC 322
Sean Brady

Suffers First-Round TKO Loss
Michael Morales

Remains Unbeaten
Leon Edwards

Suffers Second-Round Knockout Loss
Leon Edwards

Carlos Prates Becomes The First Man To Knock Out Leon Edwards
Beneil Dariush

Suffers Brutal First-Round Knockout Loss
Beneil Dariush

Benoit Saint Denis Knocks Out Beneil Dariush In 16 Seconds
Josh Naylor

Mariners Finalizing Five-Year Contract
Scott Mayfield

Available Sunday
NYI

Max Shabanov Returns From 12-Game Absence Sunday
Samuel Honzek

Out Week-to-Week
Kirby Dach

Sidelined for 4-6 Weeks
Thatcher Demko

Considered Week-to-Week
Filip Hronek

Good to Go Sunday
Quinn Hughes

Back in Action Sunday
CFB

Jeremiah Smith, Carnell Tate Not Dealing With Long-Term Injuries
CFB

Virginia Tech Close To Naming James Franklin As Head Coach
CFB

Garrett Nussmeier Doubtful vs. Arkansas On Saturday
Edwin Díaz

Blue Jays Interested in Signing Edwin Diaz?
Jacob deGrom

Named AL Comeback Player of the Year
Ronald Acuña Jr.

Ronald Acuna Jr. Wins NL Comeback Player of the Year Award
Aroldis Chapman

Named AL Reliever of the Year
Edwin Díaz

Edwin Diaz Named NL Reliever of the Year
Justin Thomas

Will Miss Start Of 2026 After Undergoing Back Surgery
Islam Makhachev

Set For UFC 322 Main Event
Jack Della Maddalena

Set For His First Title Defense
Zhang Weili

Can Become The New Women's Flyweight Champion
Valentina Shevchenko

Set For UFC 322 Co-Main Event
Michael Morales

Looks To Remain Undefeated
CFB

Mario Craver a Game-Time Decision for Week 12
Sean Brady

Set For Title Eliminator Bout
Carlos Prates

A Favorite At UFC 322
Leon Edwards

Looks To Get Back In The Win Column
Benoît Saint Denis

Benoit Saint Denis Set To Open Up UFC 322 Main Card
Beneil Dariush

Looks To Win Back-To-Back Fights
CFB

Virginia's Chandler Morris Trending Toward Facing Duke on Saturday
Edwin Díaz

Edwin Diaz Says There's a "50-50" Chance he Returns to Mets
Shohei Ohtani

Wins his Fourth MVP Award
Aaron Judge

Wins AL MVP Award Again
Raisel Iglesias

Dodgers Interested in Signing Raisel Iglesias
Pete Alonso

Orioles Could be in the Mix to Sign Pete Alonso
Félix Bautista

Felix Bautista Could Return in Second Half in 2026
Kodai Senga

Attracting Trade Interest, Will the Mets Move him?
Yordan Alvarez

Expected to be Ready for Spring Training
Byron Buxton

Could Waive his No-Trade Clause
Paul Skenes

the Unanimous NL Cy Young Winner
Tarik Skubal

Wins AL Cy Young for Second Straight Year

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