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Buy or Sell - Undervalued and Overvalued Players for Week 7

Kev Mahserejian takes a look at players who may be overvalued or undervalued in week 7. These players could be buy or sell candidates for the 2019 fantasy baseball season.

We are just over a month into the fantasy baseball season and it is a prime time to buy in on players whose production could be legit/should be better or hop off a heater before the floors caves in. As we all should know, baseball is a game of ebbs and flows. When there is too much good, expect some bad, and vice-versa.

The phrase Buy or Sell is a bit looser than it typically would be mid-season or closer to fantasy playoff time. The players covered, for the most part, are guys I am either wary of or tentatively interested in. We are walking a fine line here after the first month. Various factors play into good/bad season starts such as tough schedules with rough ballpark (or vice-versa), nagging injuries, poor team performance, and even the weather.

Do not be afraid to send out low-ball "feeler" offers to your league-mates this time of year for underperforming guys. You never know what they will take. Of course, the expectation should be that the offer is declined, but at least a potential conversation could begin. Have secondary players you are willing to throw in the deal, but also know your limits. If your mate if asking for a "stud" in return, make sure you try and upgrade elsewhere to mitigate the hit on your end. Good trades win you leagues, do not forget that. You always want to be as ahead of the curve as possible, and I am here to help with that. Let's take a look at what we've seen thus far.

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Undervalued Players - Week 7

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.

 

Rafael Devers - (3B, BOS)

79% owned

Rafi is so good but for some reason, his counting stats have been lacking this season. His batting average is up from last year and he is walking more and striking out less. The progress has been wonderful for the former top Red Sox' prospect who had some trouble making quality contact last season. Devers is still just 22 and has plenty of room to grow. He made significant strides in his conditioning over the offseason which may be leading to his current performance.

Although he is batting in the back half of the order, Devers has been productive and should be more-so as the year goes on. The Boston lineup is stacked with talent and Devers has more than enough juice in his bat to drive in much more than the 20 batters he has thus far. He should be owned in all leagues and is worth trading for even with his value jumping this past week.

 

Nomar Mazara - (OF, TEX)

66% owned

Nomar Mazara is underperforming like crazy. There is a massive discrepancy between his expected batting and slugging averages. He has cut his strikeouts down and managed to accrue a decent chunk of counting stats with a poor average. Mazara's BABIP is much lower than his career average while his hitting tendencies haven't changed too drastically (a few more fly balls than ground balls this year). He is hitting the ball hard more often than ever and has no competition for playing time.

Mazara is a prime buy candidate who could end the year as a .275 hitter with 30 home runs and nearly 100 RBI. His walk rate makes me uneasy for OBP leagues but those in OPS/AVG formats should be running to make offers for this Rangers' outfielder.

 

Lucas Giolito (SP, CWS)

27% owned

This former top pitching prospect may finally be coming into his own. Giolito's ERA is still above four but his strikeout rate is ELITE at nearly 30 percent. His xFIP and SIERA are both below four (good signs) and he has been decent against some solid competition like the Yankees and Red Sox. The outing that has tanked his numbers a bit was an early season outing against a red-hot Seattle team which could be chalked up as flukey.

Giolito has elite "stuff" and if he is putting it all together with improved velocity, you want to be along for the ride in most formats. Giolito's fastball was terrible last season but rates out as just about average now. His secondaries have been reliable and although his curveball has not been too effective yet, when it is, watch out. Giolito is worth the stream against Toronto today if he's still available just as a taste test. If he goes out and proves himself, keep him around for that next start. If not, no skin off your bones, just drop him and watch him for a bit (in shallower leagues).

 

Overvalued Players - Week 7

Overvalued does not always mean SELL. Players here are just showing enough red flags that warrant the overvalued tag.

 

Derek Dietrich - (1B/2B/OF, CIN )

37% owned

Dietrich has been on fire for the past two weeks, and I do not expect that to carry on throughout this season. Why? Mostly because he's Derek Dietrich and this is just a case of luck. No one in baseball has been luckier than Derek Dietrich. One-third of his fly balls have turned into home runs. His fly ball rate is up and so are his pull/hard-hit rates. He is selling out for power and it has worked out so far.

Going from Marlins Park to Great American Ballpark will benefit every hitter ever. GAB is a bandbox but even it cannot sustain DD's power outburst. Good news for owners is that he is walking more and striking out less. The sub-.200 BABIP will go up but should be lower than his career average due to this change in approach. If some schmuck in your league needs middle infield depth, trade Dietrich for any possible positive return.

 

David Peralta - (OF, ARI)

87% owned

Peralta is overperforming and absolutely a sell candidate. All of his expected stats on BaseballSavant point towards regression. His BABIP is nearly .400 while he is striking out more than ever and walking less than he has the past two years. The lineup in Arizona is not good and his counting stats should hit a rough patch in the near future.

Thus far, with 23 runs, 26 RBI and six home runs, Peralta should be decently attractive enough to include in a trade. Try to package him for maybe someone like Goldschmidt who has been underperforming or someone like Altuve who should not be on the injured list too long.

More 2019 Fantasy Baseball Advice




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Josh Hart

is Available to Play in Game 3
OG Anunoby

is Downgraded to Out for Game 3 on Friday
Mitchell Robinson

is Returning for Game 3
Mats Zuccarello

Expected to Play Saturday
Joel Eriksson Ek

to Be a Game-Time Decision Saturday
Jonas Brodin

Still Out Saturday
Josh Manson

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Scratched for Game 3 Against Ducks
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Likely to Remain Out Friday
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Jacoby Brissett

a Clear Sell-High Candidate for Dynasty Managers
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to Make Season Debut for Dodgers on Saturday
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Cole Ragans

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Breece Hall

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Khamzat Chimaev

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Joshua Van

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Waldo Cortes-Acosta Looks To Extend His Win Streak
Nick Lodolo

Officially Activated, Making Season Debut on Friday
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Broncos Sign GM George Paton to New Five-Year Deal
Brandon McManus

Packers Release Kicker Brandon McManus
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Jets Talking to a "Number of Veteran Quarterbacks"
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Kenneth Gainwell

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Chiefs Limited Xavier Worthy's Usage After Injury Last Year
Rashee Rice

Chiefs Not Ready to Discuss Extension With Rashee Rice?
Cade Otton

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Walker Lyons Could be Go-To Target for Bear Bachmeier
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Bounce-Back Chances Stifled by Improved Pass-Catching Depth
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Ty Benefield a Potential Game-Changer for LSU Defense
Chet Holmgren

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Hayden Lowe Set for Significant Role Following Miami's NFL Departures
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Michael Porter Jr.

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Jarred Vanderbilt

Ruled Out for Game 2 Against Thunder
Luke Kennard

Cleared to Play Thursday
Ayo Dosunmu

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Pots Game-Winner Wednesday Night
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Posts Second Consecutive Multi-Point Game
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"Seems Fine" After Early Exit on Wednesday
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Emilio Pagan has Grade 2 Hamstring Strain, Expected to Miss 4-8 Weeks
Joe Ryan

Listed as Scheduled Starter for Saturday Against Cleveland
Tyler Glasnow

Not Expected to Land on the Injured List
Framber Valdez

Suspension Reduced to Five Games
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Framber Valdez

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Tyler Glasnow

Exits Early on Wednesday With Back Pain
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Payton Pierce Next Up at Linebacker for Ohio State
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Tanook Hines Stepping into WR1 Role for USC
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Brandon Woodruff

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Carlos Correa

to Have Season-Ending Ankle Surgery
Jacob Misiorowski

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Logan Webb

Dealing With Knee Discomfort
Carlos Correa

Expected to Miss Significant Time With Ankle Injury
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Xander Schauffele

Carries Elite Form Into Quail Hollow
Hideki Matsuyama

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Patrick Cantlay

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Ludvig Aberg

Returns to Action For Truist Championship
Justin Thomas

Searching for Consistency at Quail Hollow
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Adam Scott

Brings Strong Form to Quail Hollow
Robert MacIntyre

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Jason Day

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Akshay Bhatia

Looks for Complete Game at Truist Championship
Emilio Pagán

Emilio Pagan Headed for Injured List With Hamstring Injury
Emilio Pagán

Emilio Pagan Carted Off With Apparent Hamstring Injury on Tuesday
Justin Rose

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Si Woo Kim

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Sam Burns

to Bounce Back at Truist Championship
Cameron Young

Looks to Carry Dominance to Quail Hollow
Rory McIlroy

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Chris Gotterup

Looking to Bounce Back at Quail Hollow
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Cardinals-Brewers Game Postponed on Tuesday
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Mario Craver Enters No. 1 Wide Receiver Role for Marcel Reed
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LaNorris Sellers a Strong Rebound Candidate in 2026
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Cam Coleman Poised for Monster Year at Texas?
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Will Hammond Pushing to Be Ready for Week 1
Alex Fitzpatrick

Looking to Keep Up Ball-Striking Output at Quail Hollow
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Notre Dame Leads College Football in Returning Snaps
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Two Ole Miss Football Players Arrested, Charged with DUI
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Looks Solid on the Surface Heading to Charlotte
Chase Elliott

Earns his Second Texas Motor Speedway Victory
Denny Hamlin

Misses Out on Winning at Texas
Alex Bowman

Finishes Third for the Second Week in a Row at Texas
Tyler Reddick

Earns Seventh Top-Five Finish of the Season at Texas
Chris Buescher

Scores his First Career Texas Finish in the Top Five
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Bryce Underwood in Better Situation Entering Sophomore Season
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Nico Iamaleava Emerging as Leader, Playmaker for UCLA
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