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Fantasy Baseball Rookie Risers/Fallers (Week 16)

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 47% 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.

 

Bubba Starling (OF, KC)

Season line: 20 ABs, six hits, five runs, and one steal

After featuring on last week’s AL-Only waiver primer, Starling got the call to Kansas City and is now the starting centerfielder for the foreseeable future. With Terrance Gore already DFA’d and Billy Hamilton sure to be moved at the deadline, Starling enters a team with clear needs in the outfield. A former first-round selection by the Royals, Starling has taken his time through the minors, and warts have appeared on what was a blue-chip stock on draft night. For one, the power has not been there, and while others are enjoying the new ball, Starling is at best the same from last year’s power output.

Still, the hit tool and glove/speed combo will make him a useful regular for the Royals. That is if he can keep hitting. A career .244 hitter in the minor, last year Starling posted a .257 batting line, and this year that was up to .310 before the call. The bat is key because there is a clear ceiling on his power and the speed has not been there. After posting 20-steal seasons in the low minors, Starling seems to be more of a 10-12 range option for fantasy owners. Expect Starling to be up the rest of the way, and hit for an average worthy of an OF3 play in mixed leagues. At the very least, the playing time floor makes him an asset to own.

 

Ian Gibaut (RP, TB)

Season line: 2.0 innings, two earned runs, and two Ks

Typically righty-specialists do not get two paragraphs for their debut, but Gibaut has elite stuff that he can bring to fantasy rosters. A former 11th-round selection by the Rays, Gibaut was added to the 40-man back in November. Flashing a plus fastball and slider combo, Gibaut also has a changeup that has received improved grades at each step up the ladder. While the Rays have been inconsistent with a closer role this year, if he can flash the same stuff, Gibaut is a clear candidate to open games or shut them down in the 8th.

While he has allowed two runs in his first two innings with the Rays, the numbers back at Triple-A were quite good. Over 10 innings he recorded 16 Ks and did not allow a homer. 2018 was his best season in professional ball, as he posted a 2.09 ERA and 1.00 WHIP. Add in 75 Ks over 56 innings pitched, and he put together one of the better minor league seasons for a reliever. While the impact will be tied to a role, if there is an arm to bet on, Gibaut is the name in the second half.

 

Andres Munoz (RP, SD)

Season line: 4.1 innings, zero earned runs, and six Ks

Entering the year as a mid-20s prospect for the Padres, Munoz turned a red-hot start onto an earlier than expected call. In 37 games between Double-A and Triple-A this year, Munoz posted an ERA of 2.76 and a 1.20 WHIP. Add in the 58:18 K:BB ratio, and the ratios are not only the best of his career, but clearly in the range to matter in fantasy leagues. While concerns will remain on his ability to command the fastball, the floor is much higher than many expected coming into this year. In fact, over stretches he has allowed more walks than hits, showing that even with some wildness, he can still generate outs.

The carrying pitch is the fastball, which some scouts grade as an 80. After that, there is a sharp drop with an average slider and a developing changeup. While there are concerns that Munoz lacks a true outpitch, and might struggle with the new power environment in the Majors, at the end of the day, the stuff is real. In terms of the relievers on this list, Munoz might have the most extended stay in the Bigs and could be a multi-K reliever each appearance. The WHIP numbers might jump after the call, but for now, the arm is a real weapon after a decent start to his career.

 

Rookie Debuts - Stock Down

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

Luis Escobar (RP, PIT)

Season line: 3.1 innings, zero earned runs, and one K

Another reliever making his debut in the past few weeks, Escobar entered the year just outside the top-10 on most Pirate prospect lists. The main tools are a plus 95-mph fastball, and plus curveball, with a 60/40 split during his time in the minors. While he has a changeup listed on the scouting report, he has had enough issues commanding the pitch that it will be a non-factor this season. If Escobar can spend time developing that pitch in the offseason, this is a different profile, but for now, a two-pitch reliever with velocity seems to be the fit.

The minor league numbers are excellent, with a 1.24 WHIP and 472 Ks in 479 total innings. The command improved with each step up the ladder, and overall, the tools are trending in the right direction. The ceiling is still reliant on the pitch-mix, and without a triple-digit fastball, Escobar is a middle-of-the-road arm with today’s league. Even with success so far in his career, his inability to put hitters away deep in the count will hurt him. For now the stock is down when compared to other arms as there is just not enough in the profile to allow him to stand out. Add in that he relies on the fastball, and expect the NL Central to punish him.

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
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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
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Darian Mensah Returning to Duke Next Season
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Josh Hoover Linked to Indiana in Transfer Portal
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Arch Manning Agrees to Reduced Compensation for 2026 Season
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Padres Bring Michael King Back on Three-Year Deal
Logan Webb

Will Pitch for Team USA in World Baseball Classic
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Joins Team USA for World Baseball Classic
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Will Muschamp Becoming Next Texas Defensive Coordinator
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Beau Pribula Set to Enter Transfer Portal
Bo Bichette

Willing to Make the Move to Second Base
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Jeremiyah Love Officially Heading to NFL Draft
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Jake Merklinger Leaving Tennessee for Transfer Portal
Mike Trout

Angels Open to Mike Trout Playing Center Field in 2026
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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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