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Fantasy Baseball Rookie Risers/Fallers (Week 8)

Jon Denzler reflects on fantasy baseball prospects and rookie debuts from last week, including prospect stocks that are rising and falling for fantasy owners.

Well, the Major League season is already 30.2% of the way done. Some owners think that they are on their way to victory while others are patiently waiting for things to turn around. Still, while all the victory laps are being taken, the smart owner is looking forward to the rest of the year and finding what value can still be had. While the season always seems to move quickly, the dog days of summer are still upon us.

Now that we are rolling along, so too are the call-ups. This week, the Rotoballer team keeps tabs on all the new names and faces, with insight into their fantasy value to help any team. For owners looking for a cheap spark, look no further.

For redraft, dynasty, or general fantasy players knowing the new prospects is key to begin to plan out FAAB bids and waiver claims. Target or avoid these players to helps teams keep their competitive windows open.

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

 

Rookie Debuts - Stock Up

These players helped their fantasy value with solid debut weeks for their respective team. If not on owners's radars, these players need to be.

 

Shaun Anderson (SP, SFG)

Drafted by the Red Sox in 2016, Anderson was dealt to the Giants in a package for Eduardo Nunez back in 2017. After struggling to start his pro career, Anderson looked to be a lottery ticket in the deal, and rather, has turned into one of the top pitching prospects in a weak system. Over seven starts at Triple-A, Anderson is averaging more than a K per inning and has dropped his ERA to 4.11. Taking into account that the PCL is a hitter’s league, these numbers are quite good and bode well for the future. This WHIP and ERA numbers are at worst league-average, and at best, hint at a effective arm that can play up in San Francisco.

There will be playing time for now, as the Giants are a bit short in the starting rotation. With no real arm to push him from Triple-A, Anderson will need to effective, but not dominant to keep those innings for fantasy owners. Add in the apparent benefits of pitching in Oracle Park, and Anderson is set-up to succeed more than some of the other pitching prospects on rebuilding clubs. In two starts and 10 innings to date with San Francisco, Anderson has gotten off to a good start. Add in the eight Ks and a 3.60 ERA, and there is clear fantasy interest here. For now, Anderson is a target for owners in need of arms, or who missed on the big names over the past few weeks. If he keeps pitching, Anderson will be an SP4 in most leagues.

 

Luis Arraez (2B, MIN)

If any of the prospects on this list surprised, in a good way, through their first few ABs, it was Arraez. Always thought out of as a future reserve infielder for the Twins, Arraez looks to be getting an early shot based on an excellent start to the year in the minors. In 38 games at Double-A, Arreaz was slashing .342/.415/.397 with three steals. Little to no power to dream on, Arraez works best as an MI option with batting average upside. He might add some steals, but with the Twins prolific homer attack, do not expend them to risk any outs on the bases. At the same time, with this offense, the fact that he can get on base makes the run scoring floor sit higher than most other prospects at second.

So far, in five games and 19 PAs with the Twins, Arraez has seven hits, one homer, and four runs scored. Expect a .260 batting average floor  based on early contact metrics, with room for a bit more based on good plate skills. With 17.2 launch angle, there are some interesting pieces in the analytics that can hint to a bit more lift on the ball, but the below-average exit velocity limits that upside. The good news is that the Twins plan to use him around the field, so there might be some positional flexibility coming soon. For now, Arraez is a limited impact option this year, but his dynasty stock is rising.

 

Rookie Debuts - Stock Neutral

These players neither helped nor hurt their fantasy value in the first week of play.

 

Brendan Rodgers (SS, COL)

The super prospect in Colorado is here, and fantasy owners are chomping at the bit. The context is that Rodger’s prospect stock has dipped a bit in the industry with some swing-and-miss concerns appearing in the minors over the past few years. And yet, he is still a top 50 player on most prospects lists. Still, there is always a concern with how the Rockies have used prospects in the past, and with Garrett Hampson, they might have already sunk some fantasy seasons. Rodgers is different, with the hype and skills to force his way into the team. At the very least, with this prospect, the Rockies NEED to know what they have before making moves the rest of the way. If he can play, Rodgers is a key piece moving forward, and if not, the team benefits from early information.

The first week has been good with four games, 17 ABs, and four hits. Three of those hits came in one game versus Pittsburgh, so this has not been a consistent start. For now, he is slated to be the starting option at second for the Rockies, and even while batting in the seven-hole will still get a run boost from the rest of the team and park context. The best news for owners is the declining K rate. In 19 games last year at Triple-A, Rodgers struck out 16 times. This year, in 36 games, he has only posted 25 Ks. For now, the stock is neutral with some concerns on both the tools and playing time. For owners in need of a boost, this might be the cheap option if he is still available in your league.

 

Rookie Debuts - Stock Down

These players hurt their fantasy value during their first week of play.

 

Jared Walsh (1B/P, LAA)

While he debuted in time for last week’s piece, Walsh appears this edition due to the need to see how the Angels were going to use him. A two-way player, on paper, Walsh is primarily a first baseman but might jump into the pen with some time. Even with two weeks of data, there is not much to talk about here. Only nine ABs over three games show the role and limits fantasy value without those chances. Unless he moves into a pitching role, there does not seem to be much for redrafters to get excited about for the rest of 2019.

For dynasty leaguers, the story might be a bit different. First, with Justin Bour not having the year many thought, Walsh could be moved into the primary bench option this year. Do not be surprised if he is given a chance to win more of a role next year. While most of the talk to date has focused on his pitching, the bat has some impact potential as well. With 59 homers in 397 career minor league games, and numbers that have risen with each step, Walsh projects as a CI option entering next year. Nothing to get excited about this year, but a name to learn for fantasy owners entering 2020.

More MLB Prospects Analysis




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REAL-TIME FANTASY NEWS

Luke Kennard

Out On Saturday Night Against Lakers, Will Miss Second Straight Game
Maxi Kleber

Will Make Season Debut Saturday Night Against Hawks
Dean Wade

Questionable For Saturday Night Against Bulls
Larry Nance Jr.

Listed As Questionable For Saturday Night Against Bulls
Jared McCain

Available For Saturday Night Against Raptors
Ryker Evans

Comes Off Injured Reserve
Bilal Coulibaly

Officially Out For Saturday Night Against Mavericks
Joey Daccord

Kraken Place Joey Daccord on Injured Reserve
Jordan Kyrou

Rejoins Blues Lineup Saturday
Anthony Cirelli

Won't Play on Saturday
Casey Mittelstadt

Misses Meeting With Maple Leafs
Charlie McAvoy

Sits Out Saturday's Game
Sean Monahan

a Game-Time Decision Saturday
Tetairoa McMillan

Trending Towards Playing in Week 10
Jamal Murray

Listed As Questionable For Saturday Night Against Pacers
Aaron Gordon

Questionable For Saturday Night Against Pacers
Norman Powell

Listed As Probable For Saturday Night Against Blazers
Jaime Jaquez Jr.

Listed Questionable For Saturday Night Against Blazers
Bam Adebayo

Ruled Out For Second Straight Game
A.J. Brown

Off Final Injury Report, Set To Play Monday Versus Packers
Jalen Johnson

Questionable For Saturday Night Against Lakers
Saquon Barkley

Cleared From Final Injury Report, Good To Go For Monday
Nickeil Alexander-Walker

Listed As Questionable For Saturday Against Lakers
Ayo Dosunmu

Listed As Probable For Saturday Night Against Cleveland
Jakob Poeltl

Ruled Out For Saturday's Matchup Against Sixers
Justin Fields

Set to Start in Week 10 Against Browns
Aaron Jones Sr.

Expected to Play Sunday Against Ravens
Kristaps Porzingis

Ruled Out Versus the Lakers
Darius Garland

Resting on Saturday Night
Kyshawn George

in Danger of Missing Another Game on Saturday
Dereck Lively II

Not Expected to Face the Wizards
Daniel Gafford

on the Injury Report for Saturday Night
Anthony Davis

Questionable to Play Versus the Wizards
Brock Purdy

Could Return in Week 11
Jayden Daniels

Could Return After Three Weeks
Kyler Murray

Future with Cardinals in Limbo
Tyrone Tracy Jr.

Will Remain the Giants' Starting Running Back
Artemi Panarin

Ends Dry Spell With Three-Point Outing
Marcus Johansson

Extends Point Streak to Eight Games
Spencer Knight

Posts First Shutout of the Season
Matt Duchene

to Remain Out Saturday
Zayne Parekh

Expected to "Miss a Little Bit of Time"
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Day-to-Day Following Friday's Early Exit
Rashid Shaheed

Could Play Extensively in Seahawks Debut
Aaron Judge

Headlines AL Silver Slugger Award Winners
Terry McLaurin

Officially Ruled Out for Week 10
Puka Nacua

Will Play in Week 10
William Eklund

Moved to Injured Reserve
Gustav Nyquist

Expected to Remain Out Friday
Thatcher Demko

Questionable to Play This Weekend
Brock Purdy

Questionable Again, Won't Start in Week 10
Rasmus Dahlin

Takes Leave of Absence
Filip Hallander

to Miss at Least Three Months With Blood Clot
Kevin Bahl

a Game-Time Call Friday
Patrick Kane

Returns to Action Friday
Garrett Wilson

Listed as Questionable for Week 10, Expected to Play
Shohei Ohtani

Headlines List of NL Silver Slugger Winners
MLB

Munetaka Murakami Officially Being Posted on Friday
Alvin Kamara

Listed as Questionable for Week 10
Aaron Jones Sr.

Questionable for Week 10
Brian Thomas Jr.

Ruled Out For Week 10
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Listed as Questionable for Week 10
J.K. Dobbins

Getting Second Opinion on Foot Injury
Kyler Murray

Expected to Return This Season
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Questionable for Sunday
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Kyle Tucker

Headlines List of 13 Players to Receive Qualifying Offers
Pete Fairbanks

Becomes a Free Agent
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Luke Fickell Will Return as Wisconsin's Head Coach in 2026
Bo Bichette

Blue Jays Extend Qualifying Offer to Bo Bichette
Craig Stammen

Named Padres New Manager
Jorge Polanco

Declines his 2026 Option to Become a Free Agent
Chris Sale

Braves Picking Up Chris Sale's 2026 Option
Michael Thorbjornsen

Poised to Continue Hot Play in Mexico
Davis Riley

Struggling to Find Form Ahead of World Wide Technology Championship
Taylor Montgomery

Leaning on Putter at World Wide Technology Championship
Stephan Jaeger

Offers Strong Value at World Wide Technology Championship
Ben Griffin

Looks to Stay Hot at El Cardonal
Nick Dunlap

Looking to Find His Game at El Cardonal
Wyndham Clark

Searching for Consistency at El Cardonal
Michael Brennan

Aims to Extend Fairytale Start at El Cardonal
Shane Bieber

Staying in Toronto for 2026
Salvador Perez

Agrees to Two-Year Extension With Royals
Trevor Story

Opts in for Remaining Two Years on his Contract
Yu Darvish

to Miss All of 2026 Following Flexor-Tendon Surgery
Shota Imanaga

Becomes a Free Agent
Luis Robert Jr.

White Sox Pick Up 2026 Option on Luis Robert Jr.
CFB

LJ Martin Expected to Play in Top-10 Matchup Against Texas Tech
PGA

LIV Golf Expanding To 72-Hole Format In 2026
Atlanta Braves

Braves Hire Walt Weiss as Their Next Manager
Kris Bubic

Cleared to Begin a Throwing Program
Brandon Woodruff

Declines Mutual Option for 2026
Freddy Peralta

Brewers Exercise 2026 Option on Freddy Peralta
Lucas Giolito

Declines his 2026 Player Option
J.J. Spaun

Finishes Sixth at Procore Championship
PGA

Matti Schmid Finishes Tied for 46th at Baycurrent Classic
Keith Mitchell

Finishes Tied for 10th at Baycurrent Classic
Si Woo Kim

Finishes Tied for 21st at Genesis Championship
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Max Greyserman

Finishes Second at Baycurrent Classic
Austin Eckroat

Finishes Tied for 56th at Baycurrent Classic
Luke Clanton

Finishes Tied for 56th at Bank of Utah Championship
Pete Alonso

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Wins His Second NASCAR Cup Series Championship at Phoenix
Ryan Blaney

Concludes the 2025 Season with A Win at Phoenix
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Denny Hamlin

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Steve Garcia

Scores First-Round TKO Win
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Dylan Raiola Suffers Season-Ending Injury
Waldo Cortes-Acosta

Gets Knockout Win
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Jeremiah Wells

Gets Back In The Win Column
Yadier del Valle

Remains Undefeated
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Gets Submission Win

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