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Buy or Sell: Undervalued and Overvalued Players for Week 21

Kev Mahserejian takes a look at players who may be overvalued or undervalued in week 21. These players could be buy or sell candidates for the 2019 fantasy baseball season.

Today's piece covers a set of players who either should not be available on waivers or will return back there soon. Most of the earlier editions of this recurring buy or sell article have included several universally owned players whose values have been manipulated enough by early-season performances. Unfortunately, as we get deeper into the year, the regression fairies come to ruin every savvy owner's fun.

If you need a win in H2H or a particular category filled in rotisserie, buy or sell what you must to get to where you need.  The home stretch is dark and full of terrors. Injured and underperforming players can be let go if they are taking up a roster spot that could be filled by someone much more productive. Players mentioned in this piece, and coming editions as we wind the season down, are more "add/drop" candidates rather than "buy/sells" given that trade deadlines are either passed or passing. Evaluate wisely.

Anyway, these buys and sells are worth noting for this upcoming week. Best of luck.

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

 

Undervalued Players - Week 21

 

Freddy Galvis - SS, CIN

32% owned

Galvis has had an underrated season thus far. His accomplishments in Toronto went mostly unnoticed because of how poor their offense was all season along with the fact that Galvis is an unreliable producer historically. He's presented *some* fantasy value throughout the years but never much to write home about.

Now, in Cincinnati, Galvis is surrounded by a more potent lineup (albeit just average) and plays in an even more favorable hitting park. The lack of DH is a bit of a hit to any player's value moving from the AL to NL, however, that is offset by the other factors. Galvis could be a reliable shortstop for anyone in need of a replacement going forward, and could even be an upgrade for some.

 

Matt Beaty - UTIL, LAD

2% owned

Matt Beaty came into the year as an unknown commodity and has made a name for himself with consistent hitting. Beaty is an intriguing talent who is viable in most deeper formats. He walks almost as much as he strikes out and he's shown a bit of pop throughout the year with his 24 extra-base hits in fewer than 200 plate appearances. Beaty's minor league numbers coincide with what he's done thus far and as long as he's hitting, he should remain in the lineup, mostly against lefties.

Given the potential issues with Kike Hernandez's return, Beaty is not viable in shallower leagues but should be owned in roto and points formats. His multi-positional eligibility is a bonus for any owners in need of filling corner IF or OF spots.

 

Adrian Houser - SP, MIL

12% owned

Adrian Houser has come out of nowhere and presented himself as a legitimate option to add. He's viable as a streamer for his next two matchups, both of which are against St. Louis (one home, one away). Afterward, the schedule is rough with the Astros and Cubs, unless a start gets pushed, then he'll face the Marlins. Houser's ERA and xFIP are very close and his SIERA is below four as well. He's striking out more than a batter per inning and not getting any BABIP luck to boost him.

Houser is worth grabbing and holding for a bit, with hopes that he can get pushed one day back over the next two weeks then it's smooth sailing until the last week of the season. Things look legit, but if it gets choppy, jump ship.

 

Overvalued Players - Week 21

 

Jeff Samardzija - SP, SF

62% owned

Samardzija's had a fantastic season thus far. The juiced ball has not seemed to affect his surface numbers, but the decline in his peripherals should not go unnoticed. Shark is outperforming his xFIP and SIERA by more than a run, and his schedule to end the year is pretty rough. Over the next few weeks, he has to face the Cubs in Chicago, Dodgers in LA and Red Sox in Boston, a brutal stretch that could wreck what's been a magnificent season thus far.

Luckily, he has the safety net of ATT Park to rely on to suppress runs for a handful of his other starts. Shark is a big regression candidate for the last month of the year and can potentially be dropped in shallower H2H leagues.

 

 

Daniel Vogelbach - 1B/DH, SEA

44% owned

Vogelbach's hot start to the year has been significantly slowed down with the unraveling of the Mariners. Voggy looked like the second coming of Frank Thomas before regression hit, and now he's looking like a poor man's Kyle Schwarber. He's still decent in OBP leagues due to his 16 percent walk rate, but he is still home run or bust when it comes to hitting the ball.

With the extremely poor team context and unfavorable home park, it is probably best to cut Vogelbach loose to create a streaming spot or for for a hot bat.

 

More 2019 Fantasy Baseball Advice




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REAL-TIME FANTASY NEWS

CFB

Sam Leavitt Scheduled to Visit Tennessee
Devon Toews

to Miss at Least Two Weeks
Gabriel Landeskog

Out for Several Weeks
Jamie Drysdale

Makes Early Exit Tuesday
Bobby Brink

Injured in Tuesday's Win
Adam Henrique

Expected to Miss Time
Brad Marchand

Dealing With Lingering Health Issue
Haydn Fleury

Hospitalized Tuesday
Moussa Diabaté

Ryan Kalkbrenner Out, Moussa Diabate Probable Wednesday
Brandon Miller

Listed as Probable Wednesday
Alex Caruso

Absent for Second Consecutive Game
Nicolas Claxton

Available Wednesday
Moritz Wagner

Still Out Wednesday
Franz Wagner

Not Ready to Return Wednesday
Jalen Suggs

Remains Out Wednesday
Draymond Green

Questionable to Suit Up Wednesday
Jalen Smith

Ruled Out for Second Straight Game
Matas Buzelis

Could Miss First Game of the Season Wednesday
Coby White

May Skip Wednesday's Game
Cade Cunningham

Probable for Wednesday
Isaiah Hartenstein

to Remain Out Wednesday
Kelly Oubre Jr.

Could Return to Action Wednesday
Tim Hardaway Jr.

May Remain Out Wednesday
Christian Braun

Listed as Questionable for Wednesday
Aaron Gordon

Iffy for Wednesday
Jamal Murray

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Max Strus

to Miss Another Month
Vince Williams Jr.

Making Return Tuesday Against Spurs
Trae Young

Listed as Questionable for Wednesday
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John Harbaugh Expected to be Favorite to Become New Giants Head Coach
Mason Marchment

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Jason Zucker

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Matvei Michkov

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John Harbaugh Won't Return as Ravens Head Coach
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Seth Jarvis

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Bo Bichette

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Jordan Love

Ready to Start in Wild-Card Game Against Bears
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Washington Commanders

Commanders "Mutually" Parting Ways With OC Kliff Kingsbury
CFB

Byrum Brown Officially Commits to Auburn
CFB

Austin Simmons Signing with Missouri
Jake McCabe

to Sit Out One Week
Hampus Lindholm

to Miss Time
Christian Dvorak

Flyers Sign Christian Dvorak to Five-Year Extension
Igor Shesterkin

Exits With Lower-Body Injury Monday
Joel Armia

Hurt in Monday's Win
Anze Kopitar

Sustains Lower-Body Injury Monday
Matthew Schaefer

a Game-Time Call Tuesday
CFB

Ty Simpson Undecided on 2026 Plans
CFB

Quarterback AJ Hill Following Ryan Silverfield to Arkansas
Atlanta Falcons

Falcons Have Requested an Interview With Klint Kubiak
Deshaun Watson

Browns Expect Deshaun Watson to be on the Team Next Year
Wan'Dale Robinson

Dealing With Fractured Ribs
Cam Skattebo

Hopes to be Back by Training Camp
Cameron Ward

Won't Need Surgery on his Shoulder
Davante Adams

Rams Expect Davante Adams to Return in Wild-Card Round
Arizona Cardinals

Cardinals Fire Head Coach Jonathan Gannon
Las Vegas Raiders

Raiders Fire Head Coach Pete Carroll
Malik Nabers

Unsure if He Will Be Ready for Week 1 of 2026 Season
CFB

Trinidad Chambliss Will Return to Ole Miss If Granted Sixth Year of Eligibility
Cincinnati Bengals

Zac Taylor Will Return as Bengals Head Coach in 2026
New York Giants

Giants Expected to Show Interest in Former Browns Head Coach Kevin Stefanski
Daniel Jones

Colts, Daniel Jones Appear to Have "Mutual Interest" in a 2026 Reunion
Cleveland Browns

Browns Fire Kevin Stefanski After Another Losing Season
Zay Flowers

Goes Off for 138 Yards, Two Touchdowns in Loss
Bo Bichette

Phillies Have Interest in Bo Bichette
Amon-Ra St. Brown

Dominates in Week 18 Win
Cameron Ward

Believed to Have Grade 3 AC Joint Sprain in Right Shoulder
Colston Loveland

Leads Bears in Targets, Receptions, Receiving Yards in Week 18
Kansas City Royals

Matt Quatraro Signs Three-Year Extension With Royals
CFB

Transfer QB Billy Edwards Commits to North Carolina
CFB

Sam Leavitt Visiting Texas Tech on Saturday
CFB

DJ Lagway Expected To Visit Florida State
Kyle Tucker

Blue Jays "Remain the Favorite" to Sign Kyle Tucker
CFB

Joey Aguilar Undergoes Surgery to Remove Tumor on Friday
CFB

Texas the "Team to Beat" for Transfer Running Back Isaac Brown
CFB

Rocco Becht to Follow Matt Campbell to Penn State?
CFB

Texas Targeting Cam Coleman in Transfer Portal
CFB

Former Texas Running Back CJ Baxter Visiting Kentucky
CFB

Beau Pribula Visiting Virginia Tech, Georgia Tech
Bo Bichette

Yankees Showing Interest in Bo Bichette
Houston Astros

Astros Sign Tatsuya Imai to Three-Year Deal

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