| Date | Transaction |
| 02-28-2010 | Mario Nelson has retired from football. |
| 08-16-2009 | The Tennessee Shawnees have waived Mario Nelson. |
| 09-05-2005 | The Tennessee Shawnees have moved Rickey Holloway and Mario Nelson to the active roster. |
| 08-08-2005 | The Tennessee Shawnees have moved Larry Orns, Mark Jones, Sammie Farkas, Joe Vaught, Marion Lofton, Eric Hackbart, and Ken Williamson to the active roster. The Tennessee Shawnees have moved Elliott Shivers, Mario Nelson, Mustafa Abdur-Rahim, Duane Melville, Jim Thibert, Hakeem Young, and Ben Brown to the inactive roster. |
| 12-30-2002 | The Tennessee Shawnees have moved Aasim Muhammad, Rick Gillette, Ben Brown, Van Rhodes, Mario Nelson, Mike Manzo, and Herm Harvey to the active roster. The Tennessee Shawnees have moved Larry Glenn, Jack Burton, Randy White, Tiny Rose, Verda Lee, Tim Quaid, and Earle Colteryahn to the inactive roster. |
| 12-22-2002 | The Tennessee Shawnees have moved Billy Fahay, Larry Glenn, Jack Burton, Randy White, Tiny Rose, Verda Lee, and Earle Colteryahn to the active roster. The Tennessee Shawnees have moved Aasim Muhammad, Rick Gillette, Ben Brown, Van Rhodes, Mario Nelson, Mike Manzo, and Herm Harvey to the inactive roster. |
| 12-22-2002 | Mario Nelson of the Tennessee Shawnees is injured with a hip contusion and is expected to be out for approximately 7 days. |
| 12-30-2001 | The Tennessee Shawnees have moved Mario Nelson, Mustafa Abdur-Rahim, Daryle Blessing, Mike Manzo, Bob Kofler, Ben Brown, and Johnny Corley to the active roster. The Tennessee Shawnees have moved Jack Burton, Emil Collins, Randy White, Tommy Burruss, Aaron Vairo, Bob Hipple, and Mike Lewis to the inactive roster. |
| 12-24-2001 | The Tennessee Shawnees have moved Bob Hipple, Jack Burton, Randy White, Tommy Burruss, Joe Andrus, and Mike Lewis to the active roster. The Tennessee Shawnees have moved Daryle Blessing, Ben Brown, Mario Nelson, Mike Manzo, Johnny Corley, and Bob Kofler to the inactive roster. |
| 11-26-2000 | Mario Nelson of the Tennessee Shawnees is injured with a hip contusion and is expected to be out for approximately 3 days. |
| 11-21-1999 | The Tennessee Shawnees have moved Van Rhodes and Mario Nelson to the active roster. The Tennessee Shawnees have moved Torin Guzik and Michael Pittman to the inactive roster. |
| 11-07-1999 | The Tennessee Shawnees have moved Al'Ric Watters, Deangelo Hamilton, and Amani Perry to the active roster. The Tennessee Shawnees have moved Mario Nelson, Erwin Turner, and Mike Lewis to the inactive roster. |
| 11-07-1999 | Mario Nelson of the Tennessee Shawnees is injured with a shoulder muscle strain and is expected to be out for approximately 13 days. |
| 12-20-1998 | Mario Nelson of the Tennessee Shawnees is injured with a partial ACL tear and is expected to be out for approximately 39 days. |
| 12-16-1996 | The Tennessee Shawnees have moved Hakeem Young and Mario Nelson to the active roster. |
| 09-08-1996 | The Tennessee Shawnees have moved Travis Files, J.J. Rogers, Robert Lott, Deangelo Hamilton, Louie Heath, Paul Gruber, and DeMontez Cleaver to the active roster. The Tennessee Shawnees have moved Hakeem Young, Mario Nelson, Ken Little, Cliff Izo, and Tony Green to the inactive roster. |
| 08-11-1996 | The Tennessee Shawnees have changed Dave Colbert's name to Mario Nelson. |
| 08-05-1996 | The Tennessee Shawnees have moved Dave Colbert, Shayne Smith, Erwin Turner, Alex Watters, Cliff Izo, Mike Lewis, Michael Pittman, Jeff Huneke, Roosevelt Williams, Rasheed Powell, and Herm Harvey to the active roster. The Tennessee Shawnees have moved J.J. Rogers, DeMontez Cleaver, Eric Stuckey, Bill Woodard, Robert Lott, Harry Strugar, Larry Brown, Paul Gruber, Joe Davenport, Deangelo Hamilton, Jake Bell, and Karon Brown to the inactive roster. |
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