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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

Chris Olave

Ruled Out for Week 18
Tom Wilson

Wraps Up 2025 With Gordie Howe Hat Trick
Valeri Nichushkin

Nets Second Career Hat Trick
Frank Vatrano

to Miss Six Weeks With Shoulder Injury
Conor Sheary

Noah Laba Exit With Injuries Wednesday
Brayden McNabb

Suffers Upper-Body Injury Wednesday
Miles Wood

Exits Early Wednesday
Gavin Brindley

Sustains Upper-Body Injury
Michael Porter Jr.

Battling Illness, Questionable Thursday
Joel Embiid

Likely to Play Thursday
Anthony Davis

Available Thursday
Coby White

to Miss at Least One Week
Josh Giddey

to Be Re-Evaluated in Two Weeks
Jonas Valančiūnas

Jonas Valanciunas in Walking Boot After Suffering Calf Injury
Victor Wembanyama

Expects to Play Next Game After Suffering Minor Knee Injury
Davante Adams

Not Expected to Play in Week 18
Stephon Castle

Active on Wednesday
Tyler Kolek

Elevated to Available on Wednesday
Tari Eason

Questionable Versus Brooklyn
Tobias Harris

Not Expected to Suit Up on Thursday
Ariel Hukporti

Available For Wednesday
Alperen Sengün

Alperen Sengun Questionable Versus Brooklyn
Mason Plumlee

Undergoes Groin Surgery
Zach Collins

Out at Least 10 More Days
Jerami Grant

Unavailable Again on Wednesday
Geno Smith

Won't Play in Week 18
Aaron Rodgers

Considering Playing Beyond 2025?
Sean Monahan

Sits Out Wednesday's Game
Zach Werenski

Misses Fourth Straight Game Wednesday
Dougie Hamilton

Questionable Wednesday
Radko Gudas

Expected to Remain Out Wednesday
Stefon Diggs

Expected to Play in Week 18
Ilya Lyubushkin

Back From One-Game Absence Wednesday
Alex Lyon

to Miss "Bit of Time"
Erik Cernak

Rejoins Lightning Lineup Wednesday
Christian McCaffrey

Trending to Play in Week 18
Kon Knueppel

To Make Return For Charlotte On Wednesday, In Starting Lineup
Jalen Hurts

Eagles Expected to Rest Jalen Hurts, Most Starters in Week 18
George Kittle

49ers Will be "Very Surprised" if George Kittle Doesn't Play on Saturday
Marvin Harrison Jr.

Ruled Out for Regular-Season Finale
CFB

Lane Kiffin Interested in Sam Leavitt, Brendan Sorsby at LSU
Shakir Mukhamadullin

Questionable Wednesday
Adam Gaudette

Unavailable Wednesday
Darcy Kuemper

Activated From Injured Reserve
Alex Lyon

Nursing Lower-Body Injury
William Karlsson

to Miss Olympics
Jack Eichel

a Game-Time Decision Wednesday
Jason Dickinson

Hurt Versus Islanders
Mitchell Robinson

Sits Out Wednesday's Game
Grayson Allen

Listed as Doubtful Wednesday
Mason Plumlee

Ryan Kalkbrenner, Mason Plumlee Remain Out Wednesday
Kon Knueppel

Likely to Return Wednesday
CFB

Deuce Knight Officially Entering Transfer Portal
CFB

Kewan Lacy Expected to Be Full-Go Against Georgia
Stefon Diggs

Facing Strangulation, Assault Charges
CFB

Chip Kelly Named Northwestern Offensive Coordinator
Riley Leonard

Will Start Against the Texans
Bijan Robinson

Explodes for 229 Total Yards, Two Touchdowns on Monday Night
Davante Adams

Officially Out on Monday Night
Drake London

Active Against Rams
Justin Herbert

Won't Face Broncos in Week 18
Marcus Mariota

Considered "a Stretch" to Play in Week 18
Geno Smith

Dealing With Significant Ankle Injury
Dak Prescott

Will Play in Week 18
Lamar Jackson

Week 18 Status "to be Determined"
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
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
CFB

Jay Hill Expected to be Next Michigan Defensive Coordinator

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