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 |
| 02-28-2003 | Shannon Butler has retired from football. |
| 08-26-2002 | The Montreal Mastodon have waived Shannon Butler. |
| 10-14-2001 | The Montreal Mastodon have moved Shannon Butler to the active roster. The Montreal Mastodon have moved Rex Gardner to the inactive roster. |
| 10-14-2001 | The Montreal Mastodon have acquired Shannon Butler from the waiver wire. |
| 08-12-2001 | The Montreal Mastodon have waived Shannon Butler. |
| 08-06-2001 | The Montreal Mastodon have moved Bill Pritchard to the active roster. The Montreal Mastodon have moved Shannon Butler to the inactive roster. |
| 09-18-2000 | The Montreal Mastodon have moved Lou Davis and Shannon Butler to the active roster. The Montreal Mastodon have moved Jack Walker to the inactive roster. |
| 09-18-2000 | The Montreal Mastodon have acquired Shannon Butler from the waiver wire. |
| 08-28-2000 | The Cleveland Ironmen have waived Shannon Butler. |
| 08-28-2000 | The Cleveland Ironmen have acquired Shannon Butler from the waiver wire. |
| 08-21-2000 | The Providence Devine have waived Shannon Butler. |
| 08-21-2000 | The Providence Devine have acquired Shannon Butler from the waiver wire. |
| 08-14-2000 | The Providence Devine have waived Shannon Butler. |
| 12-08-1996 | The Providence Devine have moved Shannon Butler to the active roster. The Providence Devine have moved Reidel Morris to the inactive roster. |
| 10-20-1996 | The Providence Devine have moved Ralph Young to the active roster. The Providence Devine have moved Shannon Butler to the inactive roster. |
| 10-20-1996 | Shannon Butler of the Providence Devine is injured with a knee derangement and is expected to be out for approximately 27 days. |
| 08-20-1995 | The Providence Devine have moved Shannon Butler to the active roster. |
| 04-30-1995 | The Boston Z have moved Red Kostos, D'Wayne Alexander, Reidel Morris, and Roger Hudson to the active roster. The Boston Z have moved Bruce Murray, Carl Myers, Shannon Butler, and Travis Shuler to the inactive roster. |
| 01-01-1995 | The Boston Z have moved Glen Jaynes, Jay Staff, Walt Belichick, Shawn Ladygo, Todd Kobell, and Shannon Butler to the active roster. The Boston Z have moved Ross Oliver, Liffort Workman, Dave Morris, Larry Myers, Tony Lemek, and Lou Long to the inactive roster. |
| 12-26-1994 | The Boston Z have moved Walt Belichick and Shannon Butler to the inactive roster. |
| 09-19-1994 | The Boston Z have moved Ken Hallstrom and Shannon Butler to the active roster. The Boston Z have moved Bruce Murray to the inactive roster. |
| 09-12-1994 | The Boston Z have moved Ross Robbins and Al Williams to the active roster. The Boston Z have moved Shannon Butler to the inactive roster. |
| 09-11-1994 | Shannon Butler of the Boston Z is injured with a hip contusion and is expected to be out for approximately 6 days. |
| 01-03-1994 | The Boston Z have moved Shannon Butler to the active roster. The Boston Z have moved Donnie Satterfield to the inactive roster. |
| 12-19-1993 | The Boston Z have moved Peter Ballage to the active roster. The Boston Z have moved Shannon Butler to the inactive roster. |
| 12-19-1993 | Shannon Butler of the Boston Z is injured with an ankle ligament sprain and is expected to be out for approximately 18 days. |
| 01-04-1993 | The Boston Pinky Swear have removed Trey Vastatin from the trade block. |
| 12-06-1992 | The Boston Pinky Swear have placed Trey Vastatin on the trade block. |
| 08-13-1990 | The Boston Bronze Age have changed Shannon Butler's name to Trey Vastatin. |
| 08-06-1990 | The Boston Bronze Age have moved Shannon Butler to the active roster. The Boston Bronze Age have moved Glen Jaynes to the inactive roster. |
Linebacker