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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

Lamar Jackson

Questionable to Return in Week 16 with Back Injury
Donovan Mitchell

Likely to Return on Monday Night
Willson Contreras

Shipped to the Red Sox
Patrick Kane

to Miss Fifth Consecutive Game
Tyson Kozak

Misses Second Consecutive Game
Jakob Poeltl

Back in the Lineup on Sunday Night
Jack Roslovic

Ready to Return Sunday
Alexandre Sarr

Ruled Out Against San Antonio
NJ

Arseni Gritsyuk Back in Devils Lineup Sunday
Marvin Bagley III

Ruled Out Against San Antonio
Timo Meier

Available Sunday
Davion Mitchell

Available on Sunday Night
Jack Hughes

Returns From 18-Game Absence Sunday
Andrew Wiggins

Cleared to Play on Sunday Night
J.T. Miller

Out Week-to-Week
Quinshon Judkins

Done for the Season with Broken Leg
Gardner Minshew

Likely Tore His ACL on Sunday
Nick Chubb

Officially Active Against Raiders in Week 16
Gardner Minshew

Won't Return in Week 16
Woody Marks

Officially Inactive for Week 16
Quinshon Judkins

Carted Off in Week 16, Ruled Out with Apparent Leg Injury
Tua Tagovailoa

Dolphins Hope to Trade Tua Tagovailoa in the Offseason
Woody Marks

Not Expected to Play in Week 16
Washington Commanders

Commanders to Retain Dan Quinn, Fire Joe Whitt?
New York Giants

Marcus Freeman is a Top Candidate in Giants' Head Coaching Search
Cincinnati Bengals

Zac Taylor Expected to Return as Bengals' Head Coach in 2026
Las Vegas Raiders

Pete Carroll's Future with Las Vegas Raiders in Doubt
Mike Conley

Nears Return After Missing Four Games
Tee Higgins

Active for Week 16 Against Dolphins
Brandon Clarke

Exits After Brief Appearance Against Wizards
Derrick Jones Jr.

Nears Return From Sprained MCL
Herbert Jones

Head Injury Cuts Night Short
Ivica Zubac

Leaves Early After Suffering Left Ankle Injury
Luka Dončić

Luka Doncic Exits Early With Left Leg Contusion
Tage Thompson

Scores in Sixth Consecutive Game
Jacob Fowler

Posts First Career Shutout
Jonatan Berggren

Totals Three Points Saturday
Jake Evans

to Sit Out Sunday's Game
Zach Werenski

Injured in Saturday's Loss
Frank Nazar

Expected to Miss Four Weeks
Woody Marks

Plans to Play Against Raiders in Week 16
Tee Higgins

Likely to Play at Miami on Sunday
Drake London

Expected to Return in Week 16
Marvin Harrison Jr.

Expected to Play, Will Ease Back In
Romeo Doubs

Questionable to Return Against Bears in Week 16
Jordan Love

Ruled Out with Concussion, Replaced by Malik Willis
Jalen Smith

Expected to Remain in Lineup Sunday
Ayo Dosunmu

Probable for Meeting With Hawks
Jordan Love

Evaluated for Concussion, Questionable to Return
Coby White

Iffy for Sunday
Andrew Wiggins

May Remain Out Sunday
Davion Mitchell

Questionable for Sunday
Tyler Herro

to Miss Fourth Straight Game Sunday
Trae Young

Available for Sunday's Tilt
Doug McDermott

Active on Saturday
Rui Hachimura

Misses Battle of Los Angeles
Mike Matheson

Returns Against Former Team Saturday
Timothy Liljegren

Misses Saturday's Game
Mackie Samoskevich

Out on Saturday
Anthony Cirelli

Available Against Hurricanes
Brandon Hagel

Added to Injured Reserve
Nikita Kucherov

a Game-Time Call Saturday
J.T. Miller

Injured in Saturday's Win
Zach Bogosian

Unavailable Saturday
Brandon Lowe

Pirates Acquire Brandon Lowe in Three-Team Trade
Shane Baz

Orioles Acquire Shane Baz From the Rays
CFB

Darian Mensah Returning to Duke Next Season
CFB

Josh Hoover Linked to Indiana in Transfer Portal
CFB

Arch Manning Agrees to Reduced Compensation for 2026 Season
Michael King

Padres Bring Michael King Back on Three-Year Deal
Logan Webb

Will Pitch for Team USA in World Baseball Classic
Tarik Skubal

Joins Team USA for World Baseball Classic
CFB

Will Muschamp Becoming Next Texas Defensive Coordinator
CFB

Beau Pribula Set to Enter Transfer Portal
Bo Bichette

Willing to Make the Move to Second Base
CFB

Jeremiyah Love Officially Heading to NFL Draft
CFB

Jake Merklinger Leaving Tennessee for Transfer Portal
Mike Trout

Angels Open to Mike Trout Playing Center Field in 2026
CFB

Kansas State's Jayce Brown Intends to Transfer
CFB

Nation's Leading Passer Drew Mestemaker to Enter Transfer Portal
Justin Crawford

Phillies Planning to Start Justin Crawford in Center Field
CFB

Jayden Maiava Signs New Deal to Return to USC
CFB

Aidan Mizell Won't Return to Florida, Entering Transfer Portal
CFB

East Carolina Targeting Jordan Davis as Next Offensive Coordinator
CFB

Michigan QB Jadyn Davis Set to Enter Transfer Portal
CFB

Travis Williams Joining Texas A&M Defensive Staff

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