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Buy or Sell: Undervalued and Overvalued Players for Week 13

Kev Mahserejian takes a look at players who may be overvalued or undervalued in week 13. 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.

Nevertheless, there is nothing worse than seeing one of your guys continually underperform. However, if that is the case, eight times out-of-ten it is most prudent to hold on until they at least get hot to then sell. Contrarily, do not buy high, unless it is in your best interest to win now and that player fills a particular need.

Anyway, these buys and sells are where your focus should be for this upcoming week. Best of luck dealing.

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Undervalued Players - Week 13

These players could be worth trying to add or acquire as long as you're not paying for preseason value. Ideally, they are just lying around on your wire and you can add them straight up or for a few extra FAAB dollars.

 

Brendan Rodgers - SS, COL

16% owned

Rodgers has been unspectacular at best since his initial call-up, but now, with consistent playing time in the foreseeable future, he has an opportunity to get things going. He is a high pedigree bat who gets to play half his games in Coors, you always take a chance on that. The unfortunate underperformance thus far since his most recent call is mostly due to bad timing. He has started against the elite Dodgers' pitching staff in Los Angeles, which most hitters in the league would struggle against.

I plead you all to hold on with some patience. After the Giants' series in San Francisco, Rodgers will have his first opportunity to start almost every day in Coors next weekend. With Trevor Story's thumb injury sidelining him indefinitely, it would be wise to take advantage of the potential boom that could come over the next few weeks. If Rodgers performs above expectations, there is a chance that he will remain with the team and take over at second base for the rest of the year. This is all worth the speculative add in deeper (12+) team leagues where every single roster spot is not as valuable.

Ramon Laureano - OF, OAK

40% owned

Laureano is absolutely killing it for owners in roto and standard leagues. He has recouped his value throughout the month of June with six home runs, five steals, 13 runs, and 19 RBI. His average is around .270 since June 1 and he has even moved up to fifth in the A's batting order.

Laureano is not a pretty guy to own in OBP leagues, but could still provide value with his counting stats for anyone needy of help in the outfield. The expected numbers are not far off from his current performance and suggest that this is relatively sustainable. Add him if he's still on the wire but feel free to drop if he goes cold for another extended period of time.

 

Jose Martinez - 1B/OF, STL

24% owned

This is a speculative add for deeper leagues that are hitter-needy. Thus far, outside of his slash line, Jose Martinez has been mediocre. There is a good chance that Jose Martinez gets dealt at the deadline to an AL team needy for a DH upgrade. If that were to happen, Martinez would become a near-everyday player and his value would boom. Busch Stadium is mighty kind to Martinez's average but limits his home run ability. Martinez has been a Statcast darling since last season, and could really benefit from a change of scenery along with everyday at-bats.

Rumors may heat up in the coming weeks with the deadline approaching next month, and someone else might jump on Martinez for this potential outcome. Although nothing may come of all of this, with the Cardinals opting to hold on to their best pinch-hitter/bench bat until next season, there is a decent chance that they move him. Add him in all deeper formats if you need the upside.

 

Overvalued Players - Week 13

Overvalued does not always mean SELL. Players here are just showing enough red flags that warrant the overvalued tag and could even be dropped if they have not produced enough.

 

Fernando Tatis Jr. - SS, SD

81% owned

Tatis Jr. is a wunderkind. This guy will be an absolute star for years to come, but the fact of the matter is that he is playing way over his head. You do not even have to look at his expected stats (.230 xBA and .434 xSLG) to realize that thee will be some regression to come. His BABIP is over .400 and he is striking out nearly 30 percent of the time. He should still hit his fair share of dongs and steal bags when he gets on base, but that average will plummet over the next month or so and hurt his runs and RBI as well.

Owners in redraft OBP and points leagues should be more aggressive in trying to trade him than those in roto or standard 5x5 leagues given his low walk rate and high K rate. None of what I am saying here should matter to keeper and dynasty owners, just ignore this as a whole.

 

Eric Hosmer - 1B, SD

72% owned

Nothing against the Padres, but the top-two hitters in their order are definitely overperforming. After the past two weeks, it is prime selling time. Hosmer's been racking up counting stats, but that is only as sustainable as the performance of the players around you. If Tatis regresses as he should, so should Hosmer (value wise). He still struggles to hit enough home runs and does not really run at all. Both his expected batting average and slugging percentage are below his current marks. Not saying that he won't be ownable, but the performances should be much more uninspiring.

First base is a lot weaker than it has been in recent years. Hosmer is a known commodity that could be sold at a decent price. Send out some offers for mid-level starting pitching or maybe some speedy outfielders. He could also be used as a solid sweetener in a deal for a more high-end player.

More 2019 Fantasy Baseball Advice




REAL-TIME FANTASY NEWS

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Will Play Friday Night
Kevin Huerter

is Available for Game 6
Duncan Robinson

is Returning for Game 6
Caris LeVert

is Cleared for Game 6 on Friday
OG Anunoby

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Terrence Shannon Jr.

is Tagged as Questionable for Friday
Blake Snell

Scratched From Start on Friday for Undisclosed Reasons
Luther Burden III

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Max Fried

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Jaylin Noel

Playing-Time Outlook in Houston Remains Unclear
Dylan Sampson

Role in Cleveland Looks Secure Heading into 2026
Kirk Cousins

' Dynasty Value Fading Ahead of First Season in Las Vegas
CFB

Julian Sayin Looking To Build Off Of Strong Debut Season
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College GameDay Set for First Three Weeks
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Jeremiah Smith Aiming For Ohio State Receiving Records
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Keshaun Singleton Projects as Auburn's WR1
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Jeremiah Cobb Impresses New Auburn Staff
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Alberto Mendoza Very Likely to Start for Georgia Tech
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Charles Woodson Jr. Commits to Michigan
George Holani

Dynasty Outlook Remains Cloudy
Jordan Westburg

to Have Season-Ending Elbow Surgery
Kendre Miller

Quickly Fading From Fantasy Relevance
Keon Coleman

Is Keon Coleman a Hopeless Dynasty Asset?
Marvin Harrison Jr.

a Buy-Low Candidate in Dynasty Formats
Hollywood Brown

a Cut Candidate in Dynasty Leagues?
Darnell Mooney

Barely Inside Top-100 WR Dynasty Rankings
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Dynasty Managers Getting Ready to Sell High on Justin Fields?
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a Target for Dynasty Managers in Championship Window?
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Looks To Get Back In The Win Column
Theo Johnson

Not the Primary Option in New System?
Kyle Monangai

Still Time to Buy Low on Kyle Monangai in Dynasty Leagues?
Tarik Skubal

Resumes Playing Catch, Ahead of Schedule?
Amon-Ra St. Brown

an Unheralded Dynasty Cornerstone
Karl-Anthony Towns

Making an Impact as Playmaker in Playoffs
Jalen Duren

Determined to Improve
Kevin Huerter

Tagged as Questionable for Game 6 Against Cavaliers
Caris LeVert

Considered Questionable for Friday
Duncan Robinson

Iffy for Game 6
Lane Hutson

Contributes Two Assists in Game 5 Victory
Nick Suzuki

Amasses Three Points in Crucial Victory Thursday
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Dishes Out Three Assists in Game 5 Win
Carter Hart

Stops 31 Pucks in Series-Clinching Win
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Enjoys Second Consecutive Multi-Goal Game
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Records Two Points in Game 6 Win
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Mark Stone

Misses Third Consecutive Game
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Scratched on Thursday With Hip Soreness
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Heading to Injured List With Oblique Strain
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has Knee Surgery, Expected to Miss Eight Weeks
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Makes Big Impact Off the Bench Wednesday
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Tallies 39 Points in Losing Effort
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Notches 20 Points With Six Triples
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Posts Two Assists in Season-Ending Loss
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Suspended for One Game
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Exits With Apparent Side Injury on Wednesday Night
Juan Soto

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Jacob Misiorowski

Pulled Early With Possible Leg Injury
Juan Soto

Exits Wednesday's Game Early with Ankle Injury
Kevin Huerter

is Cleared to Return for Game 5
Caris LeVert

is Available for Game 5 on Wednesday
Duncan Robinson

is Out for Game 5
Pete Fairbanks

Returns From Injured List
Christian Yelich

Out With Back Tightness on Wednesday Night
Nathan MacKinnon

Chasing History Wednesday
Ryan Poehling

Won't Be an Option for Game 6
Robby Snelling

Placed on 15-Day Injured List with Elbow Sprain
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Anthony Colandrea Looking to Elevate Nebraska Back to National Contention
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Riding Strong Form Into PGA Championship
Patrick Reed

Looking to Make Another Run at PGA Championship
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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
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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
Brandon Nimmo

Leaves Game on Tuesday with Apparent Ankle Injury
Jacob Wilson

A's Place Jacob Wilson on Injured List With Shoulder Subluxation
Christian Yelich

Brewers Reinstate Christian Yelich From Injured List
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Isaac Brown Has All-American Upside in 2026
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Nyck Harbor Heading into Breakout Year?
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Notre Dame, USC in Discussions to Resume Rivalry Series
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Jaron-Keawe Sagapolutele Has Eyes on ACC Title
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Ahmad Hardy's Gunshot Wound Not Viewed as Career-Threatening
A.J. Ewing

Mets to Call Up Top Prospect A.J. Ewing
Mookie Betts

is Officially Back on Monday
Khamzat Chimaev

Suffers his First Loss
Sean Strickland

Recaptures Middleweight Title
Tatsuro Taira

Suffers Fifth-Round TKO Loss
Joshua Van

Defends Flyweight Title
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Waldo Cortes-Acosta Drops Decision
Alexander Volkov

Wins Back-To-Back Fights
Shane Van Gisbergen

Dominates Watkins Glen for First Win of 2026
Michael McDowell

Finishes Second for Best Run of the Year At Watkins Glen
Ty Gibbs

Scores New Career-Best Finish of Third at Watkins Glen
Tyler Reddick

Continues His Strong Season With Fifth-Place Run at Watkins Glen
Austin Dillon

Earns his First Top-10 Finish of 2026 at Watkins Glen
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Ahmad Hardy Sustains Gunshot Wound, in Stable Condition
Connor Zilisch

Will Start Fifth in his First Watkins Glen Cup Series Race
Tyler Reddick

Is A Top DFS Option for Watkins Glen Lineups
Christopher Bell

Is Likely to Bounce Back This Week at Watkins Glen
William Byron

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Kyle Larson

May have A Positive Day at Watkins Glen
Chase Briscoe

May Compete for A Top-10 Finish at Watkins Glen
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OF
SP
RP

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