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Week 21 Waiver Wire - Starting Pitchers

Nick Mariano's starting pitcher (SP) fantasy baseball waiver wire targets and adds. Free agent pickups and starting pitcher sleepers for Week 21 of the 2018 MLB season.

I hope you're all ready to do whatever it takes in these last six weeks of the season to win. It might mean dropping a big name for a streamer or, if you still have trades, "losing the trade" to win the league. Don't be shy about your needs and don't be ignorant of how many innings you and your opponents have left in roto formats. Don't overlook how your H2H playoff opponent's rosters are constructed. This is crunch time.

If you want to chat more about additional arms/bats/whatever, you can find me on Twitter @NMariano53 and ask any follow-up questions.

We're using Yahoo ownership levels and cutting things off around 30% this week. Here are my starting pitcher waiver-wire targets for Week 21.

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Starting Pitcher Waiver Wire Targets

Joe Musgrove (PIT – SP/RP): 30% owned

Musgrove finally found some strikeouts alongside his low ratios, as he’s fanned 13 batters across 13 frames in his last two starts. Of course, he had struck out just two in each of his previous three outings, so please mind the reasonable range of outcomes. Luckily for us (and him), he owns a 2.12 ERA/0.88 WHIP over the last 30 days, which makes him 12-team viable no matter how you slice it.

Tyler Glasnow (TB – SP/RP): 26% owned

Glasnow squares off with the Red Sox and impressed more than the box score shows. Though he allowed five runs (four earned) over 6 ⅔ innings, he fought through poor control with three straight walks in the first inning. He didn’t walk another hitter across the next 5 ⅔ IP, which leaves me encouraged. The youngster showed poise and one bad inning against the Sox still leaves him with a 24-to-6 K-to-BB ratio over 18 ⅓ IP as a Ray. He gets to face the Royals for his 25th birthday on Aug. 23, so let’s hope he gives us all something to celebrate.

Anthony DeSclafani (CIN – SP): 26% owned

Hopefully, most of you sharps are part of the 20 percentage points of growth in DeSclafani’s ownership rate this past week. It turns out that yielding two earned over a span of three starts that last at least seven frames is a great thing. Who knew? He was owned in far more leagues two years ago before getting hurt and losing all of 2017, and now the rust may finally be off. He does have a tough assignment at Wrigley Field next, but his performance of late warrants a pickup even if you choose to bench him for that spot.

Matthew Boyd (DET – SP/RP): 23% owned

Boyd is another box-score victim, as he saw three earned runs tarnish his line in the seventh inning. I’m a little surprised he stayed in after giving up a string of hits to open the seventh, and then his bullpen allowed two inherited runners to score. Perhaps if Detroit had a more reliable ‘pen then Boyd would have yet another QS to his name and you’d all be clamoring for his service. As it stands, I get why a guy without a strong track record needs to overperform in order to convince you. But he is throwing his slider at triple the rate of 2017 as he attacks higher in the zone with his fastball. The wins may not come in the Motor City, but he’s worthy of ownership beyond 30%.

Derek Holland (SF - SP): 21% owned

It’s possible that some of you simply streamed Holland against the Mets because they’re the Mets. Although, they’ve actually been one of the best offenses this month...but that’s another story. So for those of you who don’t know what you’ve got on your hands, Holland has become a different pitcher since repositioning himself on the rubber. All of his fielding-independent metrics align with a ~3.00 ERA since then, but those in QS leagues should note he's only gone six full innings (or more) in five of his last 12 starts. But let's end on a high note -- his 27.5% strikeout rate over that span ranks 19th out of 113 starters with >50 IP. Heyo!

Alex Cobb (BAL – SP): 21% owned 

After a brief flash of hope, once he started throwing his splitter again, Cobb had once again faded from fantasy relevance. However, he’s definitely back in the conversation after tossing a complete game against the AL Central-leading Indians. Did you know that he had posted four straight QS against the Rays, Yankees, Red Sox, and Rays again before that? Yes, he’s actually been that good.

And yet, he also hasn’t. I know, what a cheap transition. The facts are that many of you still need wins, which Baltimore is not known for. Many of you also need strikeouts, which doesn’t jive with Cobb’s 5.44 K/9 in those last seven outings, but the 3.44 FIP and 4.06 xFIP make more sense. And while he's shown he can handle the AL's best, his having to face the Yankees again this week isn't what we want to target. I won't hate you for adding him, but I'd really look elsewhere first.

Austin Gomber (STL – SP/RP): 20% owned

Gomber hadn’t allowed an earned run in either of his last two starts and nearly pulled off his magic again on Monday. He’d fired off four scoreless frames against the Dodgers before they finally got him for two runs in the fifth. The Cardinals were up 3-2 at that point, but the bullpen couldn’t hold on for his third straight win. I'll be the first to admit that the southpaw's 36-to-23 K-to-BB ratio is terrifying, but he's gone about as far as a 7.1% K-BB% is going to take you. Tread carefully, I'd likely add his teammate further down the list first, but I also respect anyone chasing a hot hand.

Brett Anderson (OAK – SP): 16% owned

After twirling 7 ⅔ scoreless innings against the Mariners in his previous start, Anderson needed just 93 pitches to blank the Rangers over seven innings of work. He allowed just one hit and one walk, which brings his post-injury WHIP below 1.00 and his ERA down to 2.11. That said, the biggest surprise might be his six strikeouts, as he had punched out just 19 across 40 innings prior to Tuesday. No one will try to convince you that he’s an ace incapable of surrendering a run, but don’t underestimate the power of Oakland’s spacious park, their top-10 defense (per Fangraphs' DEF chart) and Anderson’s own abilities when healthy. He’s just never been healthy for very long, so enjoy it while it lasts!

Jordan Zimmermann (DET - SP): 12% owned

Zimmermann looked healthy in Tuesday’s start as he limited the Cubs to just one run, an Anthony Rizzo homer, over six innings of work. We’ve been fooled into thinking he’s healthy and “back” before in ‘18, only to see him crumble again. Whether it was just a loss of command or pain from his constant neck/shoulder injuries, I don’t know. What I do know is he looked strong here and gets to face the White Sox next, making him a decent streamer.

Touki Toussaint (ATL - SP): 11% owned

Toussaint will get another chance against the Marlins on Thursday, as the rookie swiftly sees another opportunity to start in the bigs. He cruised through six innings in his debut against the fish and shouldn’t be viewed any less favorably in this spot. My hope is to see more than six swinging strikes on 82 pitches and perhaps some clear pitch-mixing changes compared to his first outing. Though he could pitch the exact same sequence and I’d still want to stream him for this matchup.

Adam Plutko (CLE - SP): 8% owned

Months ago we had Plutko and Shane Bieber battling for one rotation spot, but Trevor Bauer’s injury combined with Cleveland’s cushy lead in the AL Central means both should finish out the regular season in the rotation. Plutko bought some leash by tossing seven innings of three-run ball against Baltimore in his first start back, though he had some misfortune there. He allowed only four baserunners that day, but three would score on one swing from Jonathan Villar in the third inning. The longball has been an issue for the 26-year-old righty, as he’s given up as many dingers (12) as walks issued across 48 ⅔ IP thus far. At least he has good control, right? He’ll need all of it at the ready against Boston on Thursday.

Daniel Poncedeleon (STL – RP): 5% owned

The Cardinals have sent Luke Weaver to the bullpen as their starting rotation makes the slow transition to elite (?) relief unit. This means there’s a vacant rotation slot that Poncedeleon has been awarded, which he turned into a solid outing on Tuesday night. After dazzling us with seven no-hit innings in his first MLB start, he struck out eight Dodgers while yielded one run over four innings. The K's are especially encouraging after he had rung up 10 batters in 17 ⅔ overall innings prior to Tuesday, but it makes sense given his wicked 26.3% strikeout rate over 92 Triple-A innings this year. I know four innings meant no win, but getting to 90 pitches in an effective manner is a win in its own right moving forward. I'd be fine penciling him in as my SP5/6 heading into September.

 

More Waiver Wire Pickups and Streamers




REAL-TIME FANTASY NEWS

Jackson Holliday

Orioles Reinstate Jackson Holliday From Injured List on Monday
Ronald Acuña Jr.

Braves Reinstate Ronald Acuna Jr. From Injured List on Monday
Jose Altuve

Astros Put Jose Altuve on Injured List With Oblique Strain
Larry Nance Jr.

is Questionable for Game 1 on Tuesday
OG Anunoby

is Probable for Tuesday's Game 1
Luke Kornet

is Cleared for Game 1
New Orleans Pelicans

Jamahl Mosley Agrees to Become Pelicans Next Head Coach
De'Aaron Fox

is Ruled Out for Game 1 on Monday
Ukko-Pekka Luukkonen

Set to Start Game 7
Corey Seager

Going on Injured List With Back Injury
Tage Thompson

Can Match Franchise Record With Another Multi-Point Game
Nick Suzuki

Seeks More Road Success Monday
Lane Hutson

Riding a Five-Game Assist Streak Into Game 7
Filip Gustavsson

Needs Offseason Surgery
Jeremy Peña

Jeremy Pena Reinstated and Starting on Monday Against Twins
Cam Skattebo

Dynasty Stock Rising Following NFL Draft
Kaleb Johnson

Logging First-Team Reps in OTAs
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Dynasty Value Fading After Production Decline in 2025
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Dynasty Outlook Clouded By Split Backfield in New England
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' Dynasty Upside Remains Sky-High Entering 2026
Bijan Robinson

Is Bijan Robinson the No. 1 Overall Player in Dynasty Formats?
Woody Marks

Should Have Plenty of Opportunities to Catch Passes
Drew Allar

Working as QB4 in First OTA Session
Aaron Rodgers

Reports to Steelers Facilities on Monday
Alvin Kamara

Saints Remain Non-Committal on Alvin Kamara's Future
Chris Olave

Saints Continue to Work on Extension With Chris Olave
Parker Washington

a Sneaky Trade Target in Dynasty Leagues?
Melquizael Costa

Drops Decision At UFC Vegas 117
Jarquez Hunter

Can Jarquez Hunter's Dynasty Outlook Improve in Year 2?
Arnold Allen

Bounces Back
James Conner

Off the Dynasty Radar Entirely?
Elijah Arroyo

Will Elijah Arroyo Continue to Have Trouble Getting on the Field?
Daniel Santos

Suffers Second-Round TKO Loss
Tre Tucker

Not a Long-Term Solution in Dynasty Leagues
MMA

Dohoo Choi Wins His Third Consecutive Fight
Malcolm Wellmaker

Suffers His Second Loss In A Row
Juan Diaz

Scores Second-Round Submission
Christian Edwards

Defeated At UFC Vegas 117
CFB

Transfer Running Back Arnold Barnes Visiting Iowa State on Monday
Modestas Bukauskas

Gets Split-Decision Win
Jack Bech

a Dynasty Hold as New-Look Raiders Offense Takes Shape
Jaydon Blue

a Low-Value Dynasty Stash Until Depth Charts are Settled
Makai Lemon

a Top-Five Pick in Dynasty Rookie Drafts
George Kittle

a Dynasty Buy with League-Winning Potential
Jhostynxon Garcia

Expected to Join the Pirates on Tuesday
Chris Rodriguez Jr.

a Dynasty Sleeper with High Touchdown Potential
Tobias Harris

Goes Cold in Game 7 Loss
Quinn Hughes

Open to Signing Extension This Offseason
Jalen Duren

Finishes Game 7 with Quiet Line
Cade Cunningham

Endures Cold Shooting Night Sunday
Joel Eriksson Ek

Misses Second Round Due to Heel Injury
Sam Merrill

Catches Fire in Game 7 Win
Evan Mobley

Posts Versatile Double-Double in Game 7
Jonas Brodin

Sits Out Round 2 Due to Toe Injury
Donovan Mitchell

Guides Cavaliers Into East Finals
Sam Malinski

Practices Fully Sunday
Jarrett Allen

Scores 23 Points in Cavs' Game 7 Rout of Pistons
Josh Manson

Rejoins Practice
Kevin Huerter

Active on Sunday Night
Caris LeVert

Duncan Robinson, Caris LeVert Available Sunday
Dean Wade

Max Strus Replaces Dean Wade in Starting Lineup Sunday
Luke Kornet

Iffy for Monday
Larry Nance Jr.

Won't Play Sunday
De'Aaron Fox

Listed as Questionable for Monday's Action
Jalen Williams

Officially Available for Game 1 Against Spurs
Shai Gilgeous-Alexander

Named MVP for Second Straight Year
Colt Emerson

Mariners Promoting Top Prospect Colt Emerson to Major Leagues
Bones Hyland

Wants to Stay in Minnesota
Munetaka Murakami

Fantastic First Season Continues With Two More Homers
Cristopher Sánchez

Cristopher Sanchez Dazzles With 13-Strikeout Complete Game on Saturday
Blake Snell

to Undergo Elbow Surgery on Tuesday
Clay Holmes

Could Miss Around Three Months
Jose Altuve

Exits After Swing
Corey Seager

Absent With Back Spasms on Saturday
Jeremy Lauzon

Misses Saturday's Practice
Mark Stone

Doesn't Practice Saturday
Josh Manson

Misses Practice, Considered Day-to-Day
Brent Burns

Day-to-Day Ahead of Conference Finals
Cale Makar

Considered Day-to-Day
Alex Lyon

Likely to Start Game 6 Against Canadiens
Owen Power

Available Saturday
Trevor Story

Hits the Injured List With Groin Injury
Blake Snell

Likely to Need Elbow Surgery
Kyle Schwarber

on a Heater, Hits Two More Homers to Take Major-League Lead
Clay Holmes

Suffers Fractured Fibula on Friday Night
Blake Snell

Heads to 15-Day Injured List
Blake Snell

Scratched From Start on Friday for Undisclosed Reasons
Max Fried

Heading to Injured List With Elbow Bone Bruise
CFB

Julian Sayin Looking To Build Off Of Strong Debut Season
CFB

College GameDay Set for First Three Weeks
CFB

Jeremiah Smith Aiming For Ohio State Receiving Records
CFB

Keshaun Singleton Projects as Auburn's WR1
CFB

Jeremiah Cobb Impresses New Auburn Staff
CFB

Alberto Mendoza Very Likely to Start for Georgia Tech
CFB

Charles Woodson Jr. Commits to Michigan
Jordan Westburg

to Have Season-Ending Elbow Surgery
Melquizael Costa

Set For UFC Vegas 117 Main Event
Arnold Allen

A Favorite At UFC Vegas 117
Daniel Santos

Set For UFC Vegas 117 Co-Main Event
MMA

Dohoo Choi Returns At UFC Vegas 117
Juan Diaz

Set To Make His UFC Debut
Malcolm Wellmaker

Looks To Bounce Back
Christian Edwards

Set For His UFC Debut
Modestas Bukauskas

Looks To Get Back In The Win Column
Lane Hutson

Contributes Two Assists in Game 5 Victory
Nick Suzuki

Amasses Three Points in Crucial Victory Thursday
Juraj Slafkovsky

Dishes Out Three Assists in Game 5 Win
Carter Hart

Stops 31 Pucks in Series-Clinching Win
CFB

Virginia Tech Lands Commitment from Four-Star QB Peter Bourque
CFB

NFL Veteran Tom Moore Joins Iowa Coaching Staff
CFB

Can Cam Cook Dominate in Return to Big 12?
CFB

ACC, Big 12 Support 24-Team College Football Playoff
CFB

Anthony Colandrea Looking to Elevate Nebraska Back to National Contention
CFB

Kwazi Gilmer Set for Big Impact at Nebraska
Justin Thomas

Trending Well Ahead of PGA Championship Despite Concerning Form
J.J. Spaun

Trending Up Ahead of PGA Championship
Adam Scott

Riding Strong Form Into PGA Championship
Patrick Reed

Looking to Make Another Run at PGA Championship
PGA

Sungjae Im Looks to Build on Strong Finish at Truist Championship
Sam Burns

Must Keep Ball in Play at PGA Championship
Jordan Spieth

Looks to Complete Career Grand Slam at Aronimink
Brandt Snedeker

Not the Best Option for the PGA Championship
Rasmus Hojgaard

a Volatile Option at PGA Championship
Maverick McNealy

Seeking Better Start in Philadelphia
Harry Hall

a Boom-or-Bust Option at Aronimink
Hideki Matsuyama

Attempts to Improve Over 2025 PGA Championship
Scottie Scheffler

Looks to Defend PGA Championship at Aronimink
Nicolai Hojgaard

Wants to Keep Momentum Rolling in Philadelphia
Ben Griffin

Attempting to Bounce Back After Truist Championship
CFB

Transfer Defensive Lineman Devarrick Woods Commits to Clemson
Harris English

Will Need His Putter to Thrive at Aronimink
Akshay Bhatia

Creative Flair Could Show Itself in Philadelphia
Keegan Bradley

Knows the Aronimink Golf Club Well
Si Woo Kim

Struggles at Truist Championship
Gary Woodland

Can Continue Incredible 2026 Season at PGA Championship
Xander Schauffele

In Excellent Form Heading to PGA Championship
RANKINGS
C
1B
2B
3B
SS
OF
SP
RP

RANKINGS

QB
RB
WR
TE
K
DEF