| Date | Transaction |
| 02-28-2021 | George Leonard has retired from football. |
| 08-16-2020 | The Los Angeles Marauders have waived George Leonard. |
| 08-10-2020 | The Los Angeles Marauders have moved Adrian Woodcock, Kevin Gillespie, Karl Hamel, Terrence Houghton, Kerry Snyder, Buck Humphries, Harry Wilkinson, and T.J. Opolewski to the active roster. The Los Angeles Marauders have moved George Leonard, Vince "Breakin Ankles" Sayers, Ralph McDowell, Marlon Sternaman, Herb Sivell, Gerald Atkins, Mil Robinson, Ken Barry, Jack Kinney, Speedy Genkai, and Zip Zoomba to the inactive roster. |
| 12-29-2019 | George Leonard of the Los Angeles Marauders is injured with a leg contusion and is expected to be out for approximately 7 days. |
| 10-08-2018 | The Los Angeles Marauders have moved George Leonard to the active roster. |
| 10-08-2018 | The Los Angeles Marauders have acquired George Leonard from the waiver wire. |
| 10-01-2018 | The Calgary Chimeras have waived George Leonard. |
| 08-06-2018 | The Calgary Chimeras have moved Reese Carter, Rob Mowatt, and Libby Robinson to the active roster. The Calgary Chimeras have moved George Leonard, Don Marren, and Dick Mooney to the inactive roster. |
| 09-04-2017 | The Calgary Chimeras have moved Robert Sherman, George Leonard, Herb Heeter, Don Marren, and John Karras to the active roster. The Calgary Chimeras have moved Junie Footman, Bob Ratica, Antony Burgner, and Bill Anderson to the inactive roster. |
| 08-07-2017 | The Calgary Chimeras have moved Alan Isbell to the active roster. The Calgary Chimeras have moved George Leonard to the inactive roster. |
| 11-27-2016 | The Calgary Chimeras have moved George Leonard to the active roster. The Calgary Chimeras have moved Alan Isbell to the inactive roster. |
| 11-21-2016 | The Calgary Chimeras have acquired George Leonard from the waiver wire. |
| 11-14-2016 | The Kansas City Chiefs have waived George Leonard. |
| 10-31-2016 | The Kansas City Chiefs have moved George Leonard to the active roster. |
| 10-23-2016 | The Kansas City Chiefs have moved Ron Fryer to the active roster. The Kansas City Chiefs have moved George Leonard to the inactive roster. |
| 10-23-2016 | George Leonard of the Kansas City Chiefs is injured with a hamstring strain and is expected to be out for approximately 16 days. |
| 09-04-2016 | The Kansas City Chiefs have moved George Leonard and Cliff Kubiak to the active roster. The Kansas City Chiefs have moved Ken McConnell to the inactive roster. |
| 08-08-2016 | The Kansas City Chiefs have moved George Leonard and Danny Ambrose to the inactive roster. |
| 08-31-2015 | The Kansas City Chiefs have moved George Leonard to the active roster. |
| 08-10-2015 | The Kansas City Chiefs have moved George Leonard and Cliff Kubiak to the inactive roster. |
| 12-22-2014 | The Kansas City Chiefs have moved George Leonard to the active roster. The Kansas City Chiefs have moved Eric Levy to the inactive roster. |
| 12-15-2014 | The Kansas City Chiefs have moved Jeff Fazio to the active roster. The Kansas City Chiefs have moved George Leonard and Byron Gladieux to the inactive roster. |
| 12-14-2014 | George Leonard of the Kansas City Chiefs is injured with a wrist inflammation and is expected to be out for approximately 7 days. |
| 08-31-2014 | The Kansas City Chiefs have moved George Leonard and Cliff Kubiak to the active roster. The Kansas City Chiefs have moved Andre Bernard to the inactive roster. |
| 08-25-2014 | The Kansas City Chiefs have moved George Leonard to the inactive roster. |
| 08-18-2014 | The Kansas City Chiefs have moved George Leonard to the active roster. |
| 04-27-2014 | The St. Louis Colts have moved George Leonard and Cliff Kubiak to the inactive roster. |
| 01-12-2014 | Trade #67584 has been completed between the Detroit Tiger Ants and the St. Louis Colts. The St. Louis Colts receive George Leonard (T), Draft Pick - 2015 Round 4 (DET) from the Detroit Tiger Ants in exchange for Draft Pick - 2014 Round 2 (STL), Draft Pick - 2014 Round 3 (STL). |
| 10-07-2013 | The Detroit Tiger Ants have moved George Leonard and Derek Wesley to the active roster. The Detroit Tiger Ants have moved Ray Tuipala and Buzlin Harder to the inactive roster. |
| 09-23-2013 | The Detroit Tiger Ants have moved Mike Graham and Tom Basing to the active roster. The Detroit Tiger Ants have moved George Leonard and Charlie Rivers to the inactive roster. |
| 09-22-2013 | George Leonard of the Detroit Tiger Ants is injured with an ankle ligament sprain and is expected to be out for approximately 16 days. |
| 10-29-2012 | Trade #66553 has been completed between the Washington Capitolists and the Detroit Tiger Ants. The Detroit Tiger Ants receive George Leonard (T), Az-Zahir Ali (RB), Draft Pick - 2014 Round 7 (WAS), Draft Pick - 2014 Round 5 (MIC), Draft Pick - 2013 Round 2 (WIN) from the Washington Capitolists in exchange for Ramos Eichenlaub (T), Draft Pick - 2013 Round 1 (DET). |
| 01-22-2012 | Trade #66249 has been completed between the Birmingham SJW Killers and the Washington Capitolists. The Washington Capitolists receive Pat Milstead (G), George Leonard (T) from the Birmingham SJW Killers in exchange for Draft Pick - 2012 Round 1 (SF). |
| 12-27-2010 | The Seattle Energy have placed George Leonard on the trade block. |
| 12-17-2007 | The Seattle Energy have moved George Leonard to the active roster. The Seattle Energy have moved Tom Windham and Joe Daley to the inactive roster. |
| 12-03-2007 | The Seattle Energy have moved Freddie Mumley to the active roster. The Seattle Energy have moved George Leonard to the inactive roster. |
| 12-02-2007 | George Leonard of the Seattle Energy is injured with a hamstring strain and is expected to be out for approximately 21 days. |
| 09-11-2006 | The Charlotte Hawks have moved George Leonard to the active roster. |
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