| Date | Transaction |
| 02-28-2091 | Freddie Stamper has retired from football. |
| 12-25-2090 | The San Jose Lions have waived Freddie Stamper. |
| 11-27-2090 | The San Jose Lions have acquired Freddie Stamper from the waiver wire. |
| 11-20-2090 | The San Jose Lions have waived Freddie Stamper. |
| 11-06-2090 | The San Jose Lions have moved Marv Crestin, Freddie Stamper, and Craig Turner to the active roster. The San Jose Lions have moved Mitchell McQuade, Phil Burton, Steve Spellman, and Manny Sprinkle to the inactive roster. |
| 10-30-2090 | The San Jose Lions have moved Mitchell McQuade, Manny Sprinkle, and Dave Brown to the active roster. The San Jose Lions have moved Rod Kowalczyk, Freddie Stamper, and Craig Turner to the inactive roster. |
| 10-23-2090 | The San Jose Lions have moved Freddie Stamper to the active roster. The San Jose Lions have moved Manny Sprinkle to the inactive roster. |
| 10-23-2090 | The San Jose Lions have acquired Freddie Stamper from the waiver wire. |
| 10-22-2090 | The San Jose Lions have automatically waived Freddie Stamper to comply with the 53-man roster limit. |
| 10-16-2090 | The San Jose Lions have moved Tyrone Devlin and Manny Sprinkle to the active roster. The San Jose Lions have moved Freddie Stamper and Tom Morris to the inactive roster. |
| 09-25-2090 | The San Jose Lions have moved Freddie Stamper to the active roster. |
| 09-25-2090 | The San Jose Lions have acquired Freddie Stamper from the waiver wire. |
| 09-18-2090 | The San Jose Lions have waived Freddie Stamper. |
| 09-04-2090 | The San Jose Lions have moved Walt Craten, Jermaine Gilmore, Dave Brown, Johnny Richardson, Freddie Stamper, and Kevin Settles to the active roster. The San Jose Lions have moved Jim Elliott, Rod Kowalczyk, Manny Sprinkle, and Frank Williams to the inactive roster. |
| 04-30-2090 | The San Jose Kzars have moved Frank Williams to the active roster. The San Jose Kzars have moved Freddie Stamper and Kevin Settles to the inactive roster. |
| 12-26-2089 | The San Jose Kzars have moved Freddie Stamper, Taft Omensky, and Craig Turner to the active roster. The San Jose Kzars have moved Mike Clarke and Steve Barry to the inactive roster. |
| 12-26-2089 | The San Jose Kzars have acquired Freddie Stamper from the waiver wire. |
| 12-19-2089 | The San Jose Kzars have waived Freddie Stamper. |
| 12-12-2089 | The San Jose Kzars have acquired Freddie Stamper from the waiver wire. |
| 09-04-2089 | The Arizona Cylons have waived Freddie Stamper. |
| 05-01-2089 | The Arizona Cylons have moved Bill Harrison to the active roster. The Arizona Cylons have moved Freddie Stamper to the inactive roster. |
| 01-03-2089 | The Arizona Cylons have moved Freddie Stamper and Scott Starke to the active roster. The Arizona Cylons have moved Terrell Hanneman and Dick Richardson to the inactive roster. |
| 12-27-2088 | The Arizona Cylons have moved Johnny Croudip to the active roster. The Arizona Cylons have moved Freddie Stamper to the inactive roster. |
| 01-12-2088 | The Arizona Cylons have placed Freddie Stamper on the trade block. |
| 11-24-2087 | The Arizona Cylons have moved Freddie Stamper to the active roster. The Arizona Cylons have moved Dick Richardson to the inactive roster. |
| 11-17-2087 | The Arizona Cylons have moved Dick Richardson to the active roster. The Arizona Cylons have moved Freddie Stamper to the inactive roster. |
| 11-03-2086 | The Arizona Cylons have moved Beattie Brantley and Freddie Stamper to the active roster. The Arizona Cylons have moved Robbie Henry and Johnny Tatman to the inactive roster. |
| 10-06-2086 | The Arizona Cylons have moved Johnny Croudip to the active roster. The Arizona Cylons have moved Freddie Stamper to the inactive roster. |
| 10-06-2086 | Freddie Stamper of the Arizona Cylons is injured with a severe concussion and is expected to be out for approximately 34 days. |
| 11-11-2085 | The Arizona Cylons have moved Thurman Lee and Freddie Stamper to the active roster. The Arizona Cylons have moved Johnny Croudip and Bob Graham to the inactive roster. |
| 11-05-2085 | The Arizona Cylons have moved Johnny Croudip to the active roster. The Arizona Cylons have moved Freddie Stamper to the inactive roster. |
| 12-22-2080 | Freddie Stamper of the Arizona Cylons is injured with a leg contusion and is expected to be out for approximately 7 days. |
| 09-24-2079 | The Arizona Cylons have moved Jeff Morris, Lynn Fox, and Freddie Stamper to the active roster. The Arizona Cylons have moved Bernard Beyers, Butch Dorsey, and Harley Richardson to the inactive roster. |
| 09-18-2079 | The Arizona Cylons have moved Harley Richardson to the active roster. The Arizona Cylons have moved Freddie Stamper to the inactive roster. |
| 08-07-2079 | The Arizona Cylons have moved Freddie Stamper and Travis Anderson to the active roster. The Arizona Cylons have moved Harley Richardson and Ed Robinson to the inactive roster. |
| 08-07-2079 | Trade #94622 has been completed between the San Jose Hawks and the Arizona Cylons. The Arizona Cylons receive Freddie Stamper (DE), Draft Pick - 2081 Round 4 (SJ), Draft Pick - 2081 Round 3 (SJ) from the San Jose Hawks in exchange for John Gardner (QB). |
| 08-07-2079 | The San Jose Hawks have placed Freddie Stamper on the trade block. |
Defensive End