| Date | Transaction |
| 02-28-2011 | Michael Vinson has retired from football. |
| 09-05-2010 | The Portland Strikes have waived Michael Vinson. |
| 09-05-2010 | The Portland Strikes have moved Derrick Maher, Drew Hodge, A.J. Sarratt, Davey Kelly, Steve Lewis, Jonas Walker, Al McClain, Jermaine Johnson, Mike Galimore, Donovan Carreker, Ronald Marks, Ron Short, Glenn Spek, Charles Allen, Jim Childs, Dave Virant, Ray Weatherly, and Jerry Leo to the active roster. The Portland Strikes have moved Jack Muellner, Bryan Jones, Buster Stanley, Darrell Peabody, Pat Beebe, Kurt Galigher, Brad Mitchell, Herb McIver, Larry Craig, Steve Brenner, Byron Risvold, Michael Vinson, Pete Griggs, Eugene Elliott, Theo Barnett, Henry Dillon, Daryl Anderson, and Mitchell Oden to the inactive roster. |
| 08-16-2010 | The Portland Strikes have moved Lou Gurley, Steve Brenner, Albert Logan, Bryan Jones, David Farina, Darrell Peabody, Bill Haslip, Ray Billman, Ara Chapple, Derrick Maher, Sidney Murray, Bob O'Dwyer, Sam Travis, Wayne Ross, John Mitchell, Ronnie Horne, Steve Keefer, Kurt Galigher, Dave Virant, Eddie Powell, Dick Corcoran, Jonas Allen, Mike Galimore, Greg Lamb, Bob Montgomery, and Michael Vinson to the active roster. The Portland Strikes have moved Ken Toles, Herb McIver, John Palmer, John Chantiles, Eber Powell, Laz Richard, Eugene Elliott, Ray Long, Elmer Lane, Gary Robnett, Howard Bessillieu, John Payton, Daryl Anderson, Jack Muellner, Brad Mitchell, Doug Guarnieri, John Mitchell, and Buster Stanley to the inactive roster. |
| 08-16-2010 | The Portland Strikes have acquired Michael Vinson from the waiver wire. |
| 05-02-2010 | The Shreveport Sharks have moved Jeff Terry, Corey Schaukowitch, Travis Evansen, and Russ Woodson to the active roster. |
| 05-02-2010 | The Shreveport Sharks have waived Michael Vinson. |
| 05-02-2010 | The Shreveport Sharks have moved Harry Cochran, Peter Vetrano, and Michael Vinson to the inactive roster. |
| 01-31-2010 | The Shreveport Sharks have placed Michael Vinson on the trade block. |
| 11-01-2009 | The Shreveport Sharks have placed Michael Vinson on the Injured Reserve list for the remainder of the season. |
| 10-25-2009 | Michael Vinson of the Shreveport Sharks is injured with an ankle ligament sprain and is expected to be out for approximately 28 days. |
| 09-14-2009 | The Shreveport Sharks have acquired Michael Vinson from the waiver wire. |
| 09-07-2009 | The Green Bay Scorpion Kings have moved Johnny Knecht to the active roster. The Green Bay Scorpion Kings have moved Shannon Liwienski to the inactive roster. |
| 09-07-2009 | The Green Bay Scorpion Kings have waived Michael Vinson. |
| 09-15-2008 | The Green Bay Scorpion Kings have moved Dan King to the active roster. The Green Bay Scorpion Kings have moved Michael Vinson to the inactive roster. |
| 09-07-2008 | Michael Vinson of the Green Bay Scorpion Kings is injured with a shoulder dislocation and is expected to be out for approximately 61 days. |
| 12-23-2007 | The Green Bay Scorpion Kings have moved Robert Hill, Sage Farber, and Michael Vinson to the active roster. The Green Bay Scorpion Kings have moved Russ Woodson, Giff Sutherland, and Kevin Anthony to the inactive roster. |
| 10-22-2007 | The Green Bay Scorpion Kings have moved Michael Vinson to the inactive roster. |
| 10-21-2007 | Michael Vinson of the Green Bay Scorpion Kings is injured with an ACL sprain and is expected to be out for approximately 32 days. |
| 10-01-2006 | Michael Vinson of the Green Bay Scorpion Kings is injured with a finger fracture and is expected to be out for approximately 10 days. |
| 04-30-2006 | Trade #47413 has been completed between the British Columbia Chargers and the Green Bay Scorpion Kings. The Green Bay Scorpion Kings receive Michael Vinson (T), Marcus Logan (G) from the British Columbia Chargers in exchange for Draft Pick - 2006 Round 3 (GB), Draft Pick - 2007 Round 4 (GB). |
| 01-31-2005 | The British Columbia Chargers have placed Michael Vinson on the trade block. |
| 09-09-2002 | The British Columbia Chargers have moved Michael Vinson to the active roster. |
| 09-09-2002 | The British Columbia Chargers have acquired Michael Vinson from the waiver wire. |
| 09-08-2002 | The Portland Strikes have automatically waived Michael Vinson to comply with the 53-man roster limit. |
| 08-05-2002 | The Portland Strikes have moved Ron McCartney, Damian Freeman, Eric Taylor, Don Stith, John Bealles, Jimmy Nafziger, Steve Lewis, Miller Moore, Dan Chesser, Darren Rome, Olindo Vallez, Bob Malone, and Ben Glockson to the active roster. The Portland Strikes have moved Dave Rorison, Jack Richardson, Paul Baird, Sean Hansen, Pete Gray, Robert Condit, Scott Franckhauser, Bill Ringwalt, Izzy Gallery, Lou Davis, Mike Lewis, Corey Schaukowitch, and Michael Vinson to the inactive roster. |
| 08-27-2001 | The Portland Strikes have moved Terry Davis, Ernie Lange, Charlie White, Corey Schaukowitch, Robert Condit, Samari Allen, Sean Hansen, Jack Rock, Paul Baird, George Tovar, Scott Franckhauser, Billy McDonald, Bill Joiner, Ray Rush, Ernie Brown, Tim Johnson, Jamir Bradshaw, Bill Ringwalt, Greg Bock, Walt Magnani, Michael Vinson, Bucky Gibson, Andy Jasper, Izzy Gallery, Bob Maginnes, Fred Childs, Ray Timberlake, and Luther Yonamine to the active roster. The Portland Strikes have moved Benny Vaughn, Ernie Tharpe, Pete Knight, Ray Dittman, Randy Johnson, Spider Griggs, Damian Freeman, Fred Childs, Peter Devlin, Eric Taylor, Don Stith, Bobby Petway, Donnell Gravelle, Rickey Goolesbyan, Gene Osborn, Frank Leclerc, Dick Lewis, Steve Luck, Lynn Drozdov, Glenn Spek, John Staff, Johnny Kraehe, Mike Lewis, and Steve Workman to the inactive roster. |
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