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The Waiver Wire Watch List: Week 21

Throughout the season, you want to get the jump on your competition and sniff out the breakout players before they break out. That's what this list is all about--using some in-depth research and advanced analytics to find the players who aren't quite there yet but are on their way. Some of these may suit your needs for an immediate pick-up depending on your team's situation.

This is not necessarily a list of players you should add right away at the start of Week 21 - it is a list of players to keep a very close eye on in most leagues as we further into June, and to consider picking up in deeper formats. In some cases, we will even caution you not to pick up a widely-added player, and steer you away from the fool's gold.

Use it to build your own watch list.

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

 

Pitchers to Watch in 12+ Team Leagues

Dillon Peters (SP, LAA)

After some early-season bullpen outings and an early-June spot-start, Dillon Peters was called up to join the rotation for good on July 21st. Since that call-up he's rattled off five decent outings, going 2-1 with a 3.14 ERA across 28.2 innings. His last three starts have been particularly impressive, as he's tossed quality starts in all three and has posted a 19:2 strikeout to walk ratio.

I'm particularly encouraged by the control he's showing, and while he's no flame-throwing ace, he strikes out just enough batters (21.2% in 2019) to be useful. Peters has a pair of tough draws in the Rangers and Astros this week so you're not adding him now, but I'm giving him a vote of confidence moving forward.

Joe Ross (SP, WAS)

Not unlike Peters, Joe Ross has been on a hell of a hot streak. He's dazzled in three August starts, going 3-0 with a microscopic 0.50 ERA across 18 innings of work. He's making a case for himself as the Nationals' fifth starter even when Max Scherzer returns (Ross is currently occupying his spot in the rotation), and with the Nationals chasing the Braves and staving off wild card contenders they will likely give him that opportunity. The nine walks are much higher than you'd like to see, but no home runs across the three starts is outstanding given he's had trouble with the long ball in the past.

You do still need to wait and see if he holds onto a rotation spot, but Ross has some truly encouraging numbers at the moment and he's worth watching closely.

 

Batters to Watch in 12+ Team Leagues

Mike Yastrzemski (SF, OF)

Yastrzemski is on an absolute tear right now, with six homers in his last seven games, bringing him to 16 on the season. This kind of power surge is unlikely to continue, but the 28-year-old is still seeing the ball extremely well right now. Yastrzemski isn't an immediate add given that his playing time still isn't a guaranteed thing every day (he does still head to the bench against lefties), but he also wouldn't be an everyday player in your fantasy lineup. As long as he's hitting this well, he could make for a nice injury replacement or bench player who gets in your lineup based on the matchup.

Luis Arraez (2B/3B/OF, MIN)

Arraez has been a pleasant surprise for the Twins this season, and he's been particularly productive in August. He's hitting .349 this month, and that has his average at an impressive .355 on the season as a whole. There isn't a ton of pop in his bat, as he has just three homers in 55 games, but his contact abilities and position in the potent Twins offense make him a useful asset in roto leagues. His 34 runs scored and obviously the batting average and .421 OBP earn him a platoon spot in your fantasy lineup if you're looking for a late-season boost.

Manuel Margot (SD, OF)

Remember when Manny Margot was an up-and-coming blue-chip prospect? He's never truly panned out, as he's never hit over .263 or hit more than 13 homers. He did set all those career highs and swipe 17 bags in his best overall season (2017), but that's not anywhere near living up to the initial hype. Margot still probably isn't much more than a middling MLB outfielder, but he's hitting extremely well in August in a part-time role. Across 27 plate appearances, he's hitting .375 with four homers and seven RBI, which might be enough to earn him some extra playing time. Watch and see if that becomes the case, and if it does Margot's speed and middling average/power combo would merit a roster spot for fantasy.

More Waiver Wire Pickups and Streamers




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REAL-TIME FANTASY NEWS

Calvin Ridley

Ruled Out for Remainder of Week 11 Due to Ankle Injury
Bam Knight

Will Play in Week 11 Against San Francisco
Davante Adams

Officially Active for Week 11
Kimani Vidal

Returns in Week 11 After Brief Injury Absence
Josh Jacobs

Questionable to Return in Week 11 With Knee Injury
Jordan Love

Returns to Week 11 Matchup After Injury Scare
Bryce Young

Back in Game After Ankle Injury
Jordan Love

Departs Sunday's Game At Giants With Left-Shoulder Issue
Calvin Ridley

Carted to Locker Room With Ankle Injury
De'Von Achane

Big Day for De'Von Achane in Madrid
Trey Hendrickson

May Need Offseason Surgery
Detroit Lions

Dan Campbell to Call Offensive Plays for Rest of Lions Season
Calvin Ridley

Making his Return Against Texans
Quentin Johnston

Active in Week 11
Matthew Golden

Active for Week 11 Against Giants
Brian Thomas Jr.

Officially Ruled Out Against Chargers
Drake London

Officially Active to Face Panthers
A.J. Brown

Vows to Stop Complaining on Social Media
Keon Coleman

a Healthy Scratch for Non-Performance Reasons
CFB

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

Future With Dolphins Tied to Mike McDaniel Returning
A.J. Brown

No Change in Philadelphia as A.J. Brown Still Frustrated
Grayson Allen

Sidelined With Quad Contusion
Viktor Arvidsson

Injured in Saturday's Win
Jonathan Kuminga

Knee Issue Keeps Him Out of Weekend Action
Nick Foligno

Ruled Out for Four Weeks
Bilal Coulibaly

Questionable With Calf Issue Against Nets
Samuel Honzek

Hurt in Collision With Teammate
Precious Achiuwa

Questionable With Illness For Sunday
Drew Doughty

Exits With Lower-Body Injury
P.J. Washington

Expected Back From Shoulder Issue Sunday
Charlie McAvoy

Sustains Upper-Body Injury Against Canadiens
Tre Jones

Uncertain for Sunday With Minutes Set to Tighten
Thomas Harley

Out Week-to-Week
CFB

Virginia Tech Close To Naming James Franklin As Head Coach
Coby White

Could Make Season Debut Sunday
Josh Giddey

Set to Return Sunday
Zion Williamson

Tagged as Questionable for Sunday
Ja Morant

Exits With Calf Injury Saturday
Alex Caruso

Injures Hand, Won't Return Saturday
Domantas Sabonis

Considered Questionable for Sunday
Paolo Banchero

Out Again on Sunday
Anthony Davis

Listed as Doubtful for Sunday
Aaron Nesmith

Ruled Out for at Least Four Weeks
Victor Wembanyama

Questionable for Sunday
Tari Eason

to Miss 4-6 Weeks
Julian Strawther

Will Play on Saturday Versus the Timberwolves
Marcus Smart

Out With Illness Saturday
Cameron Johnson

Ruled Out on Saturday Evening
Rui Hachimura

Won't Play on Saturday
Jeff Skinner

Placed on Injured Reserve
Matt Duchene

Continues to Sit Saturday
Thomas Harley

a Game-Time Call Saturday
Kaapo Kakko

Out Week-to-Week
Joseph Woll

Starts on Saturday
John Carlson

Out on Saturday
Rasmus Dahlin

Rejoins Sabres Lineup Saturday
Jack Hughes

to Miss Eight Weeks After Finger Surgery
Tyler Bertuzzi

a Game-Time Call Saturday
Andre Burakovsky

Available Saturday
Alex Nedeljkovic

Available for Saturday's Action
Filip Hronek

Pulled by Concussion Spotter Friday
Jesperi Kotkaniemi

Hurts Ankle in Friday's Win
Seth Jarvis

Not Expected to Be Out for Long
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
John Gibson

Fine for Saturday
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
CFB

Still No Update on Jermod McCoy's Return Timeline
Sami Valimaki

Riding Momentum Into Bermuda
Matthieu Pavon

Struggling Through a Rough Season
Taylor Montgomery

Hopes to Get Back on Track at Port Royal
Ben Martin

a Risky Play at Bermuda Championship
Mark Hubbard

Primed for a Bounce-Back Week in Bermuda
Lee Hodges

Searching for a Spark in Bermuda
Stephen Vogt

Wins Back-to-Back AL Manager of the Year Honors
Milwaukee Brewers

Pat Murphy Named NL Manager of the Year Again
Patrick Fishburn

Looking to Bounce Back in Bermuda
Eric Cole

Carrying Momentum into Bermuda
Tommy Edman

to Have Ankle Surgery Next Week
Ketel Marte

Diamondbacks Unlikely to Trade Ketel Marte
Roman Anthony

to Have a Normal Offseason
Sahith Theegala

Finishes Tied for 27th at Bank of Utah Championship
Sam Stevens

Finishes Tied for 36th at Baycurrent Classic
Patrick Rodgers

Finishes Tied For Sixth at World Wide Technology Championship
Luke List

Finishes 75th at World Wide Technology Championship
Ben Kohles

Finishes Tied for 63rd at World Wide Technology Championship
PGA

Nico Echavarria Finishes Tied for 14th at World Wide Technology Championship
Luke Clanton

Finishes Tied for 46th at World Wide Technology Championship
Blades Brown

Finishes Tied for 18th at Korn Ferry Tour Championship

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