February 25, 2021
Fargo-Moorhead: Signed RHP Bret Helton and INF Leobaldo Pina
Fargo-Moorhead: Traded OF Michael Lang to Sioux City for RHP Ryan Flores
Kansas City: Signed RHP Zack Weiss
February 24, 2021
Cleburne: Signed INF Alay Lago and INF Osvaldo Martinez
Kansas City: Signed RHP Nick Travieso
Lincoln: Signed RHP Walter Borkovich
February 23, 2021
Milwaukee: Signed RHP Conor Fisk
Sioux Falls: Acquired RHP Angel Ventura from Milwaukee for a player to be named later
February 22, 2021
Fargo-Moorhead: Signed LHP Kevin McGovern
Kansas City: Transferred the contract of LHP Aaron Brown to the Oakland Athletics
Kansas City: Signed LHP Adam McCreery
Lincoln: Signed LHP Joel Huertas
February 19, 2021
Milwaukee: Signed RHP Matt Solter
Sioux Falls: Signed LHP Ty Culbreth
February 18, 2021
Kansas City: Signed INF Anibal Sierra
February 16, 2021
Fargo-Moorhead: Signed LHP Tyler Pike
Winnipeg: RHP John Gorman is playing out his option 2021
Winnipeg: Signed INF Alexis Pantoja and C Alfonso Reda
February 15, 2021
Chicago: Acquired OF Danny Mars from Sussex County (Frontier League) for RHP Jalen Miller and a player to be named later
Kansas City: RHP Stetson Allie (signed December 24) signed with the Tampa Bay Rays
Kansas City: Signed RHP Kevin Lenik
Milwaukee: Signed RHP Karch Kowalczyk
February 12, 2021
Winnipeg: INF Kevin Lachance is playing out his option 2021
February 11, 2021
Chicago: Signed RHP Garrett Christman
Milwaukee: Signed RHP Myles Smith
Sioux City: RHP Karsen Lindell (signed January 20) has signed with the Cincinnati Reds
Sioux City: Signed RHP Ryan Flores and RHP Joe Riley
Sioux Falls: Signed C Charlie Valerio
Winnipeg: Signed RHP Christian James and RHP Justin Watland
February 10, 2021
Gary SouthShore: Signed C Jesse Wilkening
Kansas City: Signed INF Christian Colón
Lincoln: Signed INF Curt Smith
Milwaukee: Acquired RHP Angel Ventura from Gateway (Frontier League) to complete and earlier transaction
February 9, 2021
Chicago: Signed RHP Justin Goossen-Brown, INF Grant Kay and RHP Paul Schwendel
Fargo-Moorhead: Acquired LHP Cam Hatch from Sussex County (Frontier League) for a player to be named later
Fargo-Moorhead: Signed OF Alex Boxwell and RHP Michael Hope
Milwaukee: Signed C Christian Correa and RHP A.J. Schugel
Winnipeg: Signed RHP Nate Antone and LHP Ken Frosch
February 8, 2021
Gary SouthShore: RHP Dugan Darnell (signed as free agent on October 28) has signed with the Colorado Rockies
Kansas City: Signed INF Morgan McCullough
Milwaukee: Signed RHP Zach Hartman
Milwaukee: Traded RHP Angel Ventura to Gateway (Frontier League) for a player to be named later
February 5, 2021
Fargo-Moorhead: Signed INF Trace Loehr
Gary SouthShore: Signed OF Billy Cooke
February 4, 2021
Chicago: Signed RHP Greg Harris
February 3, 2021
Milwaukee: Signed OF Brett Vertigan
February 2, 2021
Chicago: Released OF Victor Roache
Fargo-Moorhead: Signed OF Jordan George
Gary SouthShore: Signed LHP Ryan Thurston
Milwaukee: Signed C Manuel Boscan and INF Miguel Gomez
Winnipeg: Signed OF Jay Gonzalez, OF Logan Hill and LHP Mitch Lambson
February 1, 2021
Fargo-Moorhead: Signed RHP Blake Rogers
Kansas City: Traded RHP Erik Manoah Jr. and INF Keaton Weisz to Tri-City (Frontier League) for two (2) players to be named later
Kansas City: Signed INF Kevin Santa
January 29, 2021
Cleburne: Signed OF Zach Nehrir
Fargo-Moorhead: Transferred the contract of INF Drew Ward (LS-4) to the Detroit Tigers
Kansas City: Signed INF Darnell Sweeney
Sioux City: Signed RHP Nick Belzer
Sioux Falls: Signed LHP Kolton Ingram and RHP Jackson Maynard
January 28, 2021
Kansas City: Signed INF Ty Kelly
Milwaukee: Signed RHP Ty Hensley
January 27, 2021
Cleburne: Signed C John Nester
Lincoln: Signed RHP Johnny Barbato
January 26, 2021
Kansas City: Signed INF Will Kengor
Kansas City: Traded OF Chuck Taylor to Sussex County (Frontier League) for a player to be named later
Milwaukee: Signed INF Logan Trowbridge
January 25, 2021
Fargo-Moorhead: Signed C Zach Almond and RHP Kevin Herget
Fargo-Moorhead: Traded INF Trey Hair to Sussex County (Frontier League) for RHP Michael Hope
Gary SouthShore: Signed RHP Sandy Lugo and INF Hayden Schilling
Fargo-Moorhead: Claimed INF Dylan Tice (LS-3) of waivers from Kansas City
Kansas City: Released OF Jordan George
Kansas City: Signed OF Jan Hernandez
Lincoln: Released RHP Dallas Beeler
Milwaukee: RHP Jake Matthys is playing out his option in 2021
Sioux Falls: Signed RHP Grady Wood
January 22, 2021
Fargo-Moorhead: Signed RHP Austin Ver Steeg
Kansas City: Signed INF Gavin LaValley
Winnipeg: Signed C Lucas Herbert, OF Tyler Hill and OF Max Murphy
January 21, 2021
Milwaukee: Transferred the contract of C Chris Chinea to the Miami Marlins.
Sioux City: Released INF Rhett Aplin
Sioux Falls: Signed OF Logan Landon
January 20, 2021
Cleburne: Released RHP Alex Boshers
Gary SouthShore: Signed OF Hunter Cullen and LHP Trevor Lubking
Kansas City: Signed LHP Eric Stout
Sioux City: Signed RHP Karsen Lindell
Sioux Falls: Released INF Ryan Brett
Sioux Falls: Signed OF Troy Alexander and OF Jabari Henry
Winnipeg: Signed RHP Ryan Dull, RHP Josh Lucas and INF Kyle Martin
January 19, 2021
Chicago: Signed RHP Juan Echevarria
Kansas City: Signed OF Ryan Grotjohn
Sioux City: Signed INF Josh Allen
Sioux Falls: Signed RHP Kevin Folman
January 18, 2021
Milwaukee: Signed RHP Brandon Koch and RHP Ryan Zimmerman
Sioux Falls: OF Mike Hart is playing out his option in 2021
January 15, 2021
Kansas City: Traded RHP A.J. Schugel to Milwaukee for cash
Sioux City: Signed RHP Carlos Sierra
January 14, 2021
Sioux Falls: Released LHP Eudis Idrogo, LHP Cesilio Pimentel, INF Gabriel Quintana and INF Alvaro Rondon
January 13, 2021
Fargo-Moorhead: Transferred the contract of LHP Matt Tomshaw to the Chicago White Sox
Gary SouthShore: Signed RHP Mark Seyler
January 12, 2021
Winnipeg: Released RHP Victor Capellan
January 11, 2021
Chicago: Signed RHP Connor Grey
Milwaukee: Signed OF Mikey Reynolds and INF Aaron Hill
January 8, 2021
Sioux Falls: Signed RHP Robbie Gordon
January 7, 2021
Gary SouthShore: Signed LHP Kevin Escorcia
Lincoln: Signed INF Ryan Long
Milwaukee: Signed RHP Ryan Newell
Sioux City: Signed INF Rhett Aplin and C Justin Felix
January 6, 2021
Gary SouthShore: Signed RHP Jack Alkire
January 5, 2021
Kansas City: Signed RHP Jameson McGrane
Milwaukee: Signed RHP Taylor Ahearn and C Christ Conley
