Numbers in this table represent the number of minutes played at each position. ST represents special teams positions other than K or P.
| Date | Transaction |
| 02-28-2005 | Ossie Walker has retired from football. |
| 09-22-2003 | The Edmonton Frostbite have waived Ossie Walker. |
| 09-01-2003 | The Edmonton Frostbite have moved Ossie Walker to the active roster. The Edmonton Frostbite have moved Eddie Gillette to the inactive roster. |
| 08-04-2003 | The Edmonton Frostbite have moved Roy Marsh, Norm Codie, Jake Curcillo, Garry Carter, Kerry Bolden, Zeke Frerotte, James Riggle, Bobby Jacobs, Mike Jones, Jim Cooper, Chris Flagler, Eddie Gillette, and John Sabados to the active roster. The Edmonton Frostbite have moved Ossie Walker, Ed Prendergast, Derek Hundon, Stephone Rossum, Petey Fletcher, Doug Birlem, Curtis Leckonby, Mike Boso, Paul Jones, Brian Johnson, Don Diggs, Fred James, David Talbott, and Hurvin Watson to the inactive roster. |
| 09-09-2002 | The Edmonton Frostbite have moved Ossie Walker to the active roster. The Edmonton Frostbite have moved Greg Ragunas to the inactive roster. |
| 09-09-2002 | The Edmonton Frostbite have acquired Ossie Walker from the waiver wire. |
| 09-08-2002 | The Cleveland Ironmen have automatically waived Ossie Walker to comply with the 53-man roster limit. |
| 09-02-2002 | The Cleveland Ironmen have moved Cordell Jells, Bobby Isbell, Carl Parros, Doug Van Horn, Archie Griffin, Gary Wray, Max Finn, Mike Pinkett, Butch Fowler, and Golden Richards to the active roster. The Cleveland Ironmen have moved Reb Wickersham, Bill McElroy, Al Scarbath, Jim Haddix, Ossie Walker, Terrelle Henry, Tony Campion, Frank White, Grant Lee, Richard Wilner, and Ron Low to the inactive roster. |
| 08-12-2002 | The Cleveland Ironmen have moved Ossie Walker to the active roster. The Cleveland Ironmen have moved William Tsoutsouvas to the inactive roster. |
| 08-12-2002 | The Cleveland Ironmen have acquired Ossie Walker from the waiver wire. |
| 08-05-2002 | The Memphis Vanguard have waived Ossie Walker. |
| 09-03-2001 | The Memphis Vanguard have moved Ossie Walker, Byron Daanen, Willie Porter, Joe Mumphord, Troy Beasley, and Pat Darrow to the active roster. The Memphis Vanguard have moved George Joyner, Bob Barnes, Syd Andrako, Joe Ryan, Nolan Amman, Levon Yelverton, and Steve Thomas to the inactive roster. |
| 08-13-2001 | The Memphis Vanguard have moved George Joyner, David Holmes, Bob Barnes, Levon Yelverton, and Johnny Shears to the active roster. The Memphis Vanguard have moved Ossie Walker, Josh Walters, Byron Daanen, Chris McDonald, Willie Porter, and Troy Beasley to the inactive roster. |
| 09-04-2000 | The Memphis Vanguard have moved Moses Winfrey, Ossie Walker, Josh Walters, Dan Johnson, Kim Hanneman, M.L. Blackshear, and Troy Beasley to the active roster. The Memphis Vanguard have moved David Holmes, Ox Young, Mark Cochran, Maugaula Parsons, Louis Midler, Merv Dinkel, and Johnnie Coffey to the inactive roster. |
| 08-14-2000 | The Memphis Vanguard have moved David Holmes, Ox Young, Donnie Pearson, Mark Cochran, Maugaula Parsons, Rick Hajek, and Louis Midler to the active roster. The Memphis Vanguard have moved Moses Winfrey, Ossie Walker, Josh Walters, Dan Johnson, Kim Hanneman, M.L. Blackshear, and Troy Beasley to the inactive roster. |
| 01-03-2000 | The Memphis Vanguard have moved Moses Winfrey, Ossie Walker, Josh Walters, Dan Johnson, Sonny Covington, Kim Hanneman, John Burton, and Troy Beasley to the active roster. The Memphis Vanguard have moved Chukky Shipp, Bo Badger, Charlie Sanders, Donnie Pearson, Rick Hajek, Louis Midler, A.A. Wilson, and Willie Porter to the inactive roster. |
| 12-27-1999 | The Memphis Vanguard have moved Charlie Sanders, Donnie Pearson, Louis Midler, Bo Badger, A.A. Wilson, and Rick Hajek to the active roster. The Memphis Vanguard have moved Ossie Walker, Moses Winfrey, Sonny Covington, Thomas Jacunski, Dan Johnson, Kim Hanneman, and Troy Beasley to the inactive roster. |
| 09-07-1998 | The Memphis Vanguard have moved Clarence Crutcher, Ossie Walker, Troy Beasley, and Abe Walendy to the active roster. The Memphis Vanguard have moved Jeff Shoals, Clem Casares, Jack Adams, and Jon Thayer to the inactive roster. |
| 08-31-1998 | The Memphis Vanguard have moved Clem Casares and Tom Johnson to the active roster. The Memphis Vanguard have moved Ossie Walker and Troy Beasley to the inactive roster. |
| 12-08-1997 | The Memphis Vanguard have moved Ossie Walker to the active roster. The Memphis Vanguard have moved Skip Moreno to the inactive roster. |
| 11-23-1997 | The Memphis Vanguard have moved Skip Moreno to the active roster. The Memphis Vanguard have moved Ossie Walker to the inactive roster. |
| 11-23-1997 | Ossie Walker of the Memphis Vanguard is injured with a hip contusion and is expected to be out for approximately 11 days. |
| 12-18-1994 | Ossie Walker of the Toronto Wolves is injured with a knee derangement and is expected to be out for approximately 14 days. |
| 08-08-1994 | The Toronto Wolves have moved Dutch Sullivan, Clarence Crutcher, Bill Smukler, Ossie Walker, Sonny Covington, Jim Snider, Tarik Musick, and Carl Bennett to the active roster. The Toronto Wolves have moved Tommie Grant, Curtis Bosseler, Wally Jeffery, Ronnie Holliday, Ralph Young, and Darwin Brink to the inactive roster. |
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