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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

Jrue Holiday

Remains Out Thursday
Khris Middleton

Unavailable Against Spurs
Bilal Coulibaly

Back From Four-Game Absence Thursday
Collin Sexton

Out on Thursday
Tari Eason

Remains Questionable on Injury Report
Dennis Schröder

Dennis Schroder Questionable for Thursday
Grayson Allen

Could Miss Clash Against Warriors
Deandre Ayton

May Skip Meeting With Jazz
Cole Anthony

Iffy for Thursday's Action
AJ Green

at Risk of Missing Another Game
Peyton Watson

Questionable for Thursday
Kyle Kuzma

Questionable for Thursday Due to Illness
Tim Hardaway Jr.

Questionable With Illness
Lauri Markkanen

Picks Up Questionable Tag Ahead of Thursday
Tristan da Silva

Questionable for Thursday
Pelle Larsson

Misses Second Straight Game
Nikola Jović

Nikola Jovic Unavailable Against Nets
Pat Spencer

Ruled Out for Thursday
Norman Powell

Misses Practice, Uncertain for Thursday
Jakob Poeltl

Listed as Probable for Thursday
Al Horford

Ruled Out for Thursday, Nearing Return
Bo Bichette

Willing to Make the Move to Second Base
Davante Adams

Doubtful to Play Thursday Night
Matthew Tkachuk

Status Uncertain for Winter Classic
Tyson Foerster

Ruled Out for Five Months
Quinton Byfield

Back From One-Game Absence Wednesday
Gustav Forsling

Available Against Kings
Pavel Dorofeyev

Good to Go Wednesday
Shea Theodore

Out Against Devils
Jack Eichel

Misses First Game of the Season Wednesday
Brett Pesce

Back in Action Wednesday
Devin Neal

Ruled Out for Sunday
Christian Watson

"Should be Good" to Face the Bears on Saturday
Geno Smith

has "a Good Chance" to Return in Week 16
Saquon Barkley

Back at Practice on Wednesday
Brady Cook

Will Start Again in Week 16
Patrick Mahomes

Rehabbing ACL, LCL Tears
Rashee Rice

Won't Practice Due to Concussion
Marvin Harrison Jr.

to Take Part in Wednesday's Walkthrough Practice
Drake London

Day-to-Day, Will Practice on Wednesday
CFB

Jeremiyah Love Officially Heading to NFL Draft
Quinn Ewers

Making First Career Start in Week 16
Tua Tagovailoa

Being Benched by Dolphins
CFB

Jake Merklinger Leaving Tennessee for Transfer Portal
Jeremy Ruckert

Jets, Jeremy Ruckert Agree to a Two-Year Extension
Thatcher Demko

Shuts Out Rangers With 23 Saves
Macklin Celebrini

Notches Four Points in Tuesday's Win
Leon Draisaitl

Reaches Special Milestone During Four-Point Night
Shea Theodore

Questionable for Wednesday Night
Jack Eichel

Battling Illness
Darcy Kuemper

Placed on Injured Reserve
Brandon Montour

Hurt on Tuesday
Mike Trout

Angels Open to Mike Trout Playing Center Field in 2026
Saquon Barkley

Misses Practice With Stinger
RJ Harvey

Dealing With Rib Injury
Josh Jacobs

Intends to Play Against Bears on Saturday
Zach Bogosian

Misses Tuesday's Game
Marcus Johansson

Unavailable Tuesday
Artyom Levshunov

Scratched for Tuesday
Mathew Barzal

a Game-Time Call Tuesday
Joseph Woll

Returns to Action Tuesday
Mike Matheson

Won't Play on Tuesday
Bam Knight

Cardinals Place Bam Knight on Injured Reserve
CFB

Kansas State's Jayce Brown Intends to Transfer
CFB

Nation's Leading Passer Drew Mestemaker to Enter Transfer Portal
Justin Crawford

Phillies Planning to Start Justin Crawford in Center Field
CFB

Jayden Maiava Signs New Deal to Return to USC
CFB

Aidan Mizell Won't Return to Florida, Entering Transfer Portal
CFB

East Carolina Targeting Jordan Davis as Next Offensive Coordinator
Patrick Mahomes

Targeting Week 1 Return in 2026
CFB

Michigan QB Jadyn Davis Set to Enter Transfer Portal
CFB

Travis Williams Joining Texas A&M Defensive Staff
Darren Waller

Hauls in Two Touchdowns in Monday Night Loss
Rome Odunze

Considered Week-to-Week With Foot Injury
Davante Adams

Considered Week-to-Week With Hamstring Injury
CFB

Dylan Raiola Entering His Name into Transfer Portal
CFB

Cincinnati's Brendan Sorsby Plans to Transfer When Portal Opens
Adolis García

Adolis Garcia, Phillies Finalizing One-Year Deal on Monday
Brandon Royval

Suffers First-Round TKO Loss
CFB

Baylor, LSU, Miami Among Potential Suitors for DJ Lagway
CFB

Aidan Chiles Will Enter Transfer Portal
Manel Kape

Shines At UFC Vegas 112
Kevin Vallejos

Gets Second-Round Knockout Win
Giga Chikadze

Suffers His First Career Knockout Loss
CFB

Quarterback DJ Lagway Entering Transfer Portal
Cesar Almeida

Gets Dominated
Cezary Oleksiejczuk

Wins Sixth Fight In A Row
Morgan Charrière

Morgan Charriere Suffers First-Round Knockout Loss
Melquizael Costa

Gets First-Round Knockout Win
Marcus Buchecha

Still Winless In The UFC
Kennedy Nzechukwu

And Marcus Buchecha Fight To Draw
Lance Gibson jr

Lance Gibson Jr. Drops Decision In His UFC Debut
King Green

Gets Back In The Win Column
Kenley Jansen

Agrees to One-Year Deal With Tigers
Merrill Kelly

Returns to Diamondbacks on Two-Year Deal
Jorge Polanco

Agrees to Two-Year Deal With Mets
CFB

LaNorris Sellers to Return to South Carolina in 2026
CFB

Washington State Expected to Hire Kirby Moore as Next Head Coach
CFB

Kyle Whittingham Stepping Down as Utah Head Coach
Manel Kape

Set For UFC Vegas 112 Main Event
Brandon Royval

An Underdog At UFC Vegas 112
Kevin Vallejos

Set For His Third UFC Fight
Giga Chikadze

In Dire Need Of Victory
Cesar Almeida

Set To Welcome Cezary Oleksiejczuk To The UFC
Cezary Oleksiejczuk

Set To Make His UFC Debut
Maikel Garcia

Royals Agree on Five-Year Extension
Melquizael Costa

Looks To Extend His Win Streak
Morgan Charrière

Morgan Charriere Looks to Win Second Consecutive Fights
Marcus Buchecha

Looks To Bounce Back
CFB

Sherrone Moore Charged with Home Invasion, Among Other Charges
CFB

Freddie Kitchens Fired from North Carolina Coaching Staff

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