RADIO
Colby Thomas is a fantasy baseball waiver wire stash for Week 9 (2025). Target Colby Thomas as a top prospect free-agent waiver wire pickup for fantasy baseball.
BALLER MOVE: Add in 12+ team leagues
CALL-UP ETA: June
ANALYSIS: Do the A's have too many good hitters? A few years ago, a prospect hitting as well in the upper minors as Colby Thomas would have had a spot available on the A's at almost any time.
The A's already have a crowded outfield, and as I'm typing this, I see Jeff Passan tweet out that they're calling up Denzel Clarke, another top outfield prospect, to the majors.
Thomas got a ton of prospect hype this offseason after he had 31 HRs, 15 SBs, and a 126 WRC+ across Double-A and Triple-A last season. He's followed up his breakout season with another strong start in Triple-A. He hit his 11th HR Thursday night.
Colby Thomas (#2 A’s prospect) goes yard!
A towering shot to left for his 11th of the year!
The Aviators blow it wide open!#AviatorsUp pic.twitter.com/yL4vOlrUzH
— Las Vegas Aviators (@AviatorsLV) May 23, 2025
It's unclear what Thomas' path to the majors will be this season, and the path got even more crowded with Clarke's promotion. However, when he gets the call, he has massive power upside, especially in playing half his games in the launching pad, which is the Athletics' home park in Sacramento.
- Written by Kevin Luo
Top Prospect Rankings and 2025 Call-Up ETAs
You can also check out RotoBaller's fantasy baseball prospect rankings for 2025. Eric Cross updates the below rankings weekly for the top impact prospects for 2025, and when they may be called up:
| Rank | Player | Pos | Team | ETA |
| 1 | Roman Anthony | OF | BOS | June |
| 2 | Bubba Chandler | SP | PIT | June |
| 3 | Jacob Misiorowski | SP | MIL | June |
| 4 | Jac Caglianone | 1B | KCR | July |
| 5 | Andrew Painter | SP | PHI | June |
| 6 | Samuel Basallo | C | BAL | July |
| 7 | Moises Ballesteros | 3B | CHC | July |
| 8 | Chase DeLauter | OF | CLE | June |
| 9 | Brady House | 3B | WAS | June |
| 10 | Kyle Teel | C | CHW | July |
| 11 | Coby Mayo | 3B | BAL | July |
| 12 | Cole Young | 2B/SS | SEA | June |
| 13 | Chase Burns | SP | CIN | August |
| 14 | Ryan Ritter | SS | COL | June |
| 15 | Deyvison De Los Santos | 1B | MIA | June |
| 16 | Otto Kemp | 3B | PHI | June |
| 17 | Justin Crawford | OF | PHI | July |
| 18 | Shay Whitcomb | INF | HOU | July |
| 19 | Thomas Saggese | INF | STL | June |
| 20 | Colby Thomas | OF | ATH | July |
| 21 | Rhett Lowder | SP | CIN | July |
| 22 | Zac Veen | OF | COL | June |
| 23 | Jonathon Long | 3B | CHC | July |
| 24 | Emmanuel Rodriguez | OF | MIN | July |
| 25 | Carson Williams | SS | TBR | July |
Top Prospect Dynasty Rankings
Looking for longer term fantasy baseball prospect rankings? You can also check out RotoBaller's top dynasty prospect rankings from Eric Cross:
| Rank | Player | Position | Team | Age | ETA | Prev |
| 1 | Roman Anthony | OF | BOS | 21.01 | 2025 | 1 |
| 2 | Leodalis De Vries | SS | SDP | 18.6 | 2027 | 18 |
| 3 | Nick Kurtz | 1B | ATH | 22.18 | Debuted | 12 |
| 4 | Jesus Made | SS | MIL | 18.02 | 2027 | 16 |
| 5 | Jordan Lawlar | 2B/SS | ARI | 22.84 | Debuted | 15 |
| 6 | Konnor Griffin | SS/OF | PIT | 19.06 | 2027 | 27 |
| 7 | Travis Bazzana | 2B | CLE | 22.72 | 2025 | 6 |
| 8 | Sebastian Walcott | SS | TEX | 19.18 | 2026 | 5 |
| 9 | Max Clark | OF | DET | 20.4 | 2026 | 8 |
| 10 | J.J. Wetherholt | SS | STL | 22.69 | 2026 | 11 |
| 11 | Zyhir Hope | OF | LAD | 20.32 | 2026 | 19 |
| 12 | Walker Jenkins | OF | MIN | 20.24 | 2026 | 4 |
| 13 | Matt Shaw | 3B | CHC | 23.53 | Debuted | 7 |
| 14 | Josue De Paula | OF | LAD | 19.98 | 2026 | 34 |
| 15 | Samuel Basallo | C/1B | BAL | 20.76 | 2025 | 13 |
| 16 | Bubba Chandler | P | PIT | 22.67 | 2025 | 29 |
| 17 | Coby Mayo | 3B | BAL | 23.44 | Debuted | 17 |
| 18 | EmManuel Rodriguez | OF | MIN | 22.22 | 2025 | 10 |
| 19 | Andrew Painter | P | PHI | 22.1 | 2025 | 14 |
| 20 | Jackson Jobe | P | DET | 22.8 | Debuted | 9 |
| 21 | Kevin McGonigle | 2B/SS | DET | 20.75 | 2026 | 20 |
| 22 | Jac Caglianone | 1B | KCR | 22.27 | 2025 | 30 |
| 23 | Dalton Rushing | C/1B | LAD | 24.24 | Debuted | 23 |
| 24 | Felnin Celesten | SS | SEA | 19.67 | 2027 | 28 |
| 25 | Chase DeLauter | OF | CLE | 23.61 | 2025 | 21 |
| 26 | Marcelo Mayer | SS | BOS | 22.43 | 2025 | 38 |
| 27 | Chase Burns | P | CIN | 22.33 | 2026 | 46 |
| 28 | Lazaro Montes | OF | SEA | 20.57 | 2026 | 39 |
| 29 | Bryce Eldridge | 1B | SFG | 20.57 | 2025 | 24 |
| 30 | Robert Calaz | OF | COL | 19.48 | 2027 | 31 |
| 31 | Noah Schultz | P | CHW | 21.78 | 2025 | 26 |
| 32 | Cam Smith | OF | HOU | 22.23 | Debuted | 36 |
| 33 | Braden Montgomery | OF | CHW | 22.06 | 2026 | 37 |
| 34 | Agustin Ramirez | C/1B | MIA | 23.69 | Debuted | 45 |
| 35 | Travis Sykora | P | WAS | 21.05 | 2026 | 41 |
| 36 | Bryce Rainer | SS | DET | 19.87 | 2027 | 61 |
| 37 | Moises Ballesteros | C | CHC | 21.5 | Debuted | 60 |
| 38 | Carson Williams | SS | TBR | 21.9 | 2025 | 25 |
| 39 | Jonny Farmelo | OF | SEA | 20.44 | 2026 | 43 |
| 40 | Emil Morales | SS | LAD | 18.65 | 2027 | 42 |
| 41 | Colt Emerson | SS | SEA | 19.82 | 2026 | 32 |
| 42 | Chase Dollander | P | COL | 23.56 | Debuted | 47 |
| 43 | Luis Pena | 3B/SS | MIL | 18.62 | 2027 | 134 |
| 44 | Thomas White | P | MIA | 20.63 | 2026 | 68 |
| 45 | Luke Keaschall | 2B | MIN | 22.76 | Debuted | 48 |
| 46 | Aidan Smith | OF | TBR | 20.82 | 2026 | 40 |
| 47 | Jett Williams | SS/OF | NYM | 21.54 | 2025 | 53 |
| 48 | Michael Arroyo | 2B | SEA | 20.53 | 2026 | 35 |
| 49 | Jacob Misiorowski | P | MIL | 23.12 | 2025 | 76 |
| 50 | Colby Thomas | OF | ATH | 24.31 | 2025 | 52 |
Popular Player Comparison Searches - Who To Pickup?
Below are some popular searches and comparisons from our fantasy baseball Who To Pickup tool for Colby Thomas and others. You can also use the free Who Should I Pickup tool to run your own waiver wire comparisons, up to four players at once:
Zebby Matthews or Logan Henderson
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Zebby Matthews or Bubba Chandler
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Colin Rea or Zebby Matthews
Bubba Chandler or Zebby Matthews
Jackson Jobe or Bubba Chandler
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Sandy Alcantara or Roman Anthony
Chandler Simpson or Jac Caglianone
Gunnar Hoglund or Bubba Chandler
Hayden Birdsong or Bubba Chandler
Jack Leiter or Bubba Chandler
Jacob Misiorowski or Zebby Matthews
Andy Pages or Roman Anthony
Clayton Kershaw or Bubba Chandler
Colin Rea or Zebby Matthews
Drake Baldwin or Dalton Rushing
Gunnar Hoglund or Logan Henderson
Gunnar Hoglund or Zebby Matthews
Hayden Birdsong or Zebby Matthews
Hyeseong Kim or Jordan Lawlar
Jack Leiter or Zebby Matthews
Jack Leiter or Zebby Matthews
Reese Olson or Bubba Chandler
Tony Gonsolin or Bubba Chandler
Zebby Matthews or Bubba Chandler
Zebby Matthews or Jacob Misiorowski
Bubba Chandler or Roman Anthony
Chandler Simpson or Jordan Lawlar
Chase Meidroth or Matt Shaw
Chase Meidroth or Robert Hasselliii
Daulton Varsho or Marcelo Mayer
David Festa or Zebby Matthews
Daysbel Hern%C3%A1Ndez or Zebby Matthews
Drake Baldwin or Dalton Rushing
Gavin Lux or Marcelo Mayer
Ivan Herrera or Zebby Matthews
Jac Caglianone or Zebby Matthews
Jack Leiter or Bubba Chandler
Jacob Misiorowski or Bubba Chandler
Jacob Wilson or Zebby Matthews
Jake Meyers or Zebby Matthews
Jasson Dominguez or Jordan Lawlar
Jonathan Aranda or Jordan Lawlar
Josh Lowe or Jordan Lawlar
Kyle Stowers or Jordan Lawlar
Logan Henderson or Jacob Misiorowski
Logan Henderson or Zebby Matthews
Masyn Winn or Jordan Lawlar
Matt Shaw or Marcelo Mayer
Matthew Liberatore or Logan Henderson
Mitchell Parker or Bubba Chandler
Nick Kurtz or Bubba Chandler
Nick Kurtz or Roman Anthony
Porter Hodge or Jordan Lawlar
Ryan Weathers or Bubba Chandler
Ryan Weathers or Bubba Chandler
Zebby Matthews or Bubba Chandler
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Zebby Matthews or Matt Shaw
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