2021 MLB Debut Chart With Signing Scouts
Because of the coronavirus pandemic, many things were strange about the 2020 big league season. Foremost among those quirks was the number of players who debuted despite the regular season being just 60 games long (or 61, if you're Starling Marte). In total, 212 players got their first taste of the big leagues.
Three of those players—Minnesota's Alex Kirilloff, Tampa Bay's Shane McClanahan and San Diego's Ryan Weathers—made their debuts during the postseason, leaving 209 during the stunted regular year.
By comparison, 261 players debuted during the 162-game regular season in 2019.
Last year, Baseball America decided to keep track of who debuted and when, with credit to each player's signing scout. You can find the 2020 version here.
We're doing it again in 2021 starting the day after Opening Day, which saw nine new big leaguers. That list includes top prospects like Jonathan India (Reds), Ha-Seong Kim (Padres) and Taylor Trammell (Mariners) as well as Rule 5 draftees Will Vest (Mariners) and Brett de Geus (Rangers).
Keep an eye on this page all season long for an updated list.
| Name | Team | Date | Signing Scout(s) |
| Brett de Geus | Rangers | 4/1/2021 | Tom Kunis (Dodgers) |
| Jonathan India | Reds | 4/1/2021 | Sean Buckley |
| Kyle Isbel | Royals | 4/1/2021 | Kenny Munoz |
| Ha-Seong Kim | Padres | 4/1/2021 | Hun Namgung |
| Tucupita Marcano | Padres | 4/1/2021 | Antonio Alejos/Chris Kemp/Yfrain Linares |
| Chas McCormick | Astros | 4/1/2021 | Zach Clark |
| Ka'ai Tom | Athletics | 4/1/2021 | Junie Melendez (Indians) |
| Taylor Trammell | Mariners | 4/1/2021 | John Poloni (Reds) |
| Will Vest | Mariners | 4/1/2021 | Matt Lea (Tigers) |
| Andrew Vaughn | White Sox | 4/2/2021 | Adam Virchis |
| Jordan Sheffield | Rockies | 4/2/2021 | Marty Lamb (Dodgers) |
| Hirokazu Sawamura | Red Sox | 4/2/2021 | Gus Quattlebaum/Kento Matsumoto |
| Jose Rojas | Angels | 4/2/2021 | Ben Diggins |
| Chris Rodriguez | Angels | 4/2/2021 | Ralph Reyes |
| Ben Bowden | Rockies | 4/2/2021 | Scott Corman |
| Trevor Stephan | Indians | 4/3/2021 | Matt Ranson (Yankees) |
| Zach Pop | Marlins | 4/3/2021 | Marty Lamb (Dodgers) |
| Geraldo Perdomo | D-Backs | 4/3/2021 | Junior Noboa/Elvis Cruz |
| Luis Oviedo | Pirates | 4/3/2021 | Koby Perez/Luis Camacho (Indians) |
| Paul Campbell | Marlins | 4/3/2021 | Joe Hastings (Rays) |
| Jake Brentz | Royals | 4/3/2021 | Darin Vaughan (Blue Jays) |
| Kohei Arihara | Rangers | 4/3/2021 | Joe Furukawa/Hajime Watabe |
| Garrett Whitlock | Red Sox | 4/4/2021 | Mike Wagner (Yankees) |
| Tyler Wells | Orioles | 4/4/2021 | John Leavitt (Twins) |
| Akil Baddoo | Tigers | 4/4/2021 | Jack Powell (Twins) |
| Mac Sceroler | Orioles | 4/5/2021 | Jimmy Moran (Reds) |
| Ryan McKenna | Orioles | 4/5/2021 | Kirk Fredriksson |
| Kevin Padlo | Rays | 4/6/2021 | Jon Lukens (Rockies) |
| Matt Peacock | D-backs | 4/6/2021 | Kerry Jenkins |
| Cody Wilson | Nationals | 4/7/2021 | Alex Morales |
| Sam Clay | Nationals | 4/7/2021 | Jack Powell (Twins) |
| Josh Palacios | Blue Jays | 4/9/2021 | Don Norris |
| Ty Tice | Blue Jays | 4/9/2021 | Dallas Black |
| Luke Raley | Dodgers | 4/9/2021 | Marty Lamb |
| Alex Lange | Tigers | 4/10/2021 | Kevin Ellis |
| Alan Trejo | Rockies | 4/10/2021 | Jon Lukens |
| Brent Honeywell | Rays | 4/11/2021 | Brian Hickman |
| Justin Steele | Cubs | 4/12/2021 | J.P. Davis |
| Ronnie Dawson | Astros | 4/14/2021 | Nick Venuto |
| Eduard Bazardo | Red Sox | 4/14/2021 | Alex Requeña/Eddie Romero |
| Alex De Goti | Astros | 4/16/2021 | John Martin |
| Scott Hurst | Cardinals | 4/16/2021 | Brock Ungricht |
| Peter Solomon | Astros | 4/18/2021 | Nick Venuto |
| Camilo Doval | Giants | 4/18/2021 | Gabriel Elias |
| Nick Maton | Phillies | 4/19/2021 | Justin Morgenstern |
| J.B. Bukauskas | D-backs | 4/20/2021 | Tim Bittner (Astros) |
| Sam Hentges | Indians | 4/20/2021 | Les Pajari |
| Zack Short | Tigers | 4/21/2021 | Matt Sherman (Cubs) |
| Rodolfo Castro | Pirates | 4/21/2021 | Rene Gayo/Juan Mercaso/Jose Ortiz |
| Gregory Santos | Giants | 4/22/2021 | Eddie Romero/Manny Nanita (Red Sox) |
| DJ Peters | Dodgers | 4/23/2021 | Tom Kunis |
| Ryan Hendrix | Reds | 4/23/2021 | Byron Ewing |
| Jason Vosler | Giants | 4/24/2021 | Matt Sherman (Cubs) |
| Corey Ray | Brewers | 4/24/2021 | Jeff Simpson |
| Aaron Northcraft | Padres | 4/24/2021 | Tom Battista (Braves) |
| Kent Emanuel | Astros | 4/24/2021 | Tim Bittner |
| Jose Devers | Marlins | 4/24/2021 | Juan Rosario (Yankees) |
| Louis Head | Rays | 4/25/2021 | Kyle Van Hook (Indians) |
| Bailey Falter | Phillies | 4/25/2021 | Demerius Pittman |
| Zac Lowther | Orioles | 4/25/2021 | Adrian Dorsey |
| Trevor Megill | Cubs | 4/26/2021 | Brent Mayne (Padres) |
| Hyeon-Jeon Yang | Rangers | 4/26/2021 | Curtis Jung |
| Jay Flaa | Orioles | 4/27/2021 | Dan Durst |
| Justin Lawrence | Rockies | 4/29/2021 | John Cedarburg |
| Edwin Uceta | Dodgers | 4/30/2021 | Luis Marquez/Matt Doppelt |
| Ben Rortvedt | Twins | 4/30/2021 | Mark Wilson |
| Nick Sandlin | Indians | 05/01/2021 | Chuck Bartlett |
| Wyatt Mills | Mariners | 05/01/2021 | Alex Ross/Jeff Sakamoto |
| Lucas Gilbreath | Rockies | 05/01/2021 | Brett Baldwin |
| Mario Feliciano | Brewers | 05/01/2021 | Charlie Sullivan |
| Alec Bettinger | Brewers | 05/02/2021 | James Fisher |
| Keegan Thompson | Cubs | 05/02/2021 | Alex McClure |
| Daniel Lynch | Royals | 05/03/2021 | Jim Farr |
| Andy Ibañez | Rangers | 05/04/2021 | Jose Fernandez/Roberto Aquino/Gil Kim/Thad Levine |
| Anthony Bender | Marlins | 05/05/2021 | George Vranau |
| Patrick Mazeika | Mets | 05/05/2021 | Jon Updike |
| Hunter Owen | Pirates | 05/05/2021 | Anthony Wycklendt |
| Nick Gordon | Twins | 05/06/2021 | Brett Dowdy |
| Jack Kruger | Angels | 05/06/2021 | J.T. Zink |
| Isaac Mattson | Orioles | 05/07/2021 | Jared Barnes |
| Sebastian Rivero | Royals | 05/07/2021 | Richard Castro/Alberto Garcia/Orlando Estevez |
| Trevor Larnach | Twins | 05/08/2021 | Kyle Blackwell |
| Troy Stokes Jr. | Brewers | 05/09/2021 | Dan Nellum |
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