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| 2023-08-22 00:00:00 | Clarksville River Bandits | | Promoted | Luke Anderson | Chicago Hilltoppers |
| 2023-08-22 00:00:00 | Clarksville River Bandits | | Promoted | Henry Sheehan | Chicago Hilltoppers |
| 2023-08-21 18:30:11 | Orlando Bombers | 2nd round pick in season 37 | Acquired via trade | Shane Evans | Phoenix Kangaroos |
| 2023-08-21 18:30:11 | Orlando Bombers | | Acquired via trade | Alejandro Kessler | Phoenix Kangaroos |
| 2023-08-21 17:45:21 | Dallas Hounds | 3rd round pick in season 37 | Acquired via trade | Daniel Smith | Kansas City Wildcats |
| 2023-08-21 17:45:21 | Dallas Hounds | 3rd round pick in season 37 | Acquired via trade | | Kansas City Wildcats |
| 2023-08-21 00:00:00 | San Antonio Brothas | | Demoted | Alec Mor | Calgary Cougars |
| 2023-08-21 00:00:00 | San Antonio Brothas | | Demoted | Harry Haley | Calgary Cougars |
| 2023-08-21 00:00:00 | New York Warriors | | Demoted | Fernando Ruiz | Hartford Hebrew Hammers |
| 2023-08-21 00:00:00 | Orlando Bombers | | Drop | Brett Carter | |
| 2023-08-21 00:00:00 | Mexico City Aztecs | | Promoted | Silas Thomas | Denver Ferris Wheels |
| 2023-08-21 00:00:00 | Denver Ferris Wheels | | Demoted | Anjel Rothenberg | Mexico City Aztecs |
| 2023-08-21 00:00:00 | San Juan Devils | | Promoted | Jordan Fletcher | Phoenix Kangaroos |
| 2023-08-21 00:00:00 | San Juan Devils | | Promoted | Richard Brown | Phoenix Kangaroos |
| 2023-08-21 00:00:00 | Phoenix Kangaroos | | Demoted | Jalen Sharif | San Juan Devils |
| 2023-08-21 00:00:00 | Phoenix Kangaroos | | Demoted | Carlos Moore | San Juan Devils |
| 2023-08-21 00:00:00 | Syracuse River Rats | | Promoted | Jamie Long | Houston Octopods |
| 2023-08-21 00:00:00 | Syracuse River Rats | | Promoted | Deep Green | Houston Octopods |
| 2023-08-21 00:00:00 | Houston Octopods | | Demoted | Isaac Hannigan | Syracuse River Rats |
| 2023-08-21 00:00:00 | Caracas Crocodiles | | Promoted | Alex Marshall | St. Louis 5th Alarm |
| 2023-08-21 00:00:00 | Philadelphia Assassins | | Demoted | Devon Hostetler | South Dakota Blackhawks |
| 2023-08-21 00:00:00 | St. Louis 5th Alarm | | Demoted | Kobee Roach | Caracas Crocodiles |
| 2023-08-21 00:00:00 | Dallas Hounds | | Demoted | Edward Allen | Norfolk Wolves |
| 2023-08-19 00:00:00 | Little Rock Fighting Farmers | | Promoted | Richard Walker | San Francisco Golden Gators |
| 2023-08-19 00:00:00 | Cleveland Weasels | | Drop | James Ryan | |