| Date | Transaction |
| 02-28-1989 | Clayton Shannon has retired from football. |
| 11-28-1988 | The Cleveland Ironmen have waived Clayton Shannon. |
| 11-28-1988 | The Cleveland Ironmen have acquired Clayton Shannon from the waiver wire. |
| 08-15-1988 | The Cleveland Ironmen have waived Clayton Shannon. |
| 08-15-1988 | The Cleveland Ironmen have moved Ray Jones to the active roster. The Cleveland Ironmen have moved Clayton Shannon to the inactive roster. |
| 08-08-1988 | The Cleveland Ironmen have moved Bob Barry, Arnie O'Neal, Nick Pietrosante, Max Schmitz, Lloyd Pasquesi, Mark Brown, Pat Jones, Dante Lane, Frosty Rucker, Joe Howard, Loris Odomes, Scott Smith, Clayton Shannon, Arturo Brown, Mel Leach, Andy Katzenmoyer, Hal Fisk, Tyrone Frost, Joe McDuffie, Todd Hickman, Greg Richardson, Jerald Ball, Malcolm Darling, Melvin Scales, Danny Kyle, Clark Cecil, Bill Jett, Bob Talamini, Lee Calland, Milt Ziff, Jim Garrett, Greasy Neal, and Greg Hock to the active roster. The Cleveland Ironmen have moved Reese Jordan, Joe Blahak, Thelonious Rolls, Joe Hershey, Bob Tasca, Don Milk, Rick Carlisle, Sonny Brinkley, Elby Justice, Dave Silk, Al Underwood, Rex Kern, Albie Ra, Plato Vitalis, Moses Arbogast, Sixten Blixt, Tony Zale, Jack Frost, Ruby Vickers, Ziggy Rudd, Tony Postma, Derrick Morse, Bruno Sammartino, Charlie Pasteryak, Booker Essex, Reb Wickersham, Ray Guy, Elijah Baylor, Roger Perdrix, Marvel Updike, Ray May, Paul Warfield, and Rosaire Paiement to the inactive roster. |
| 05-01-1988 | The Cleveland Ironmen have acquired Clayton Shannon from the waiver wire. |
| 05-01-1988 | The Cleveland Ironmen have waived Clayton Shannon. |
| 05-01-1988 | The Cleveland Ironmen have acquired Clayton Shannon from the waiver wire. |
| 09-06-1987 | The New Jersey Jokers have waived Clayton Shannon. |
| 08-23-1987 | The New Jersey Jokers have moved Mike Fiss to the active roster. The New Jersey Jokers have moved Clayton Shannon to the inactive roster. |
| 08-16-1987 | The New Jersey Jokers have moved Clayton Shannon to the active roster. The New Jersey Jokers have moved Mike Fiss to the inactive roster. |
| 11-10-1986 | The New Jersey Jokers have moved Leshon Pricer, Keith Haynes, and Mike Fiss to the active roster. The New Jersey Jokers have moved June Tarr, Clayton Shannon, and Jeff Steponovich to the inactive roster. |
| 10-19-1986 | The New Jersey Jokers have moved Clayton Shannon and Dwayne Trost to the active roster. The New Jersey Jokers have moved Bob Smith and Leshon Pricer to the inactive roster. |
| 09-01-1985 | The New Jersey Jokers have moved Leshon Pricer to the active roster. The New Jersey Jokers have moved Clayton Shannon to the inactive roster. |
| 08-19-1985 | The New Jersey Jokers have moved Clayton Shannon to the active roster. The New Jersey Jokers have moved June Tarr to the inactive roster. |
| 08-05-1985 | The New Jersey Jokers have moved June Tarr and Mike Fiss to the active roster. The New Jersey Jokers have moved Clayton Shannon and Leshon Pricer to the inactive roster. |
| 12-17-1984 | The New Jersey Jokers have moved Clayton Shannon to the active roster. The New Jersey Jokers have moved Richard McGee to the inactive roster. |
| 10-22-1984 | The New Jersey Jokers have acquired Clayton Shannon from the waiver wire. |
| 10-01-1984 | The Miami Plague have waived Clayton Shannon. |
| 09-12-1983 | The Miami Plague have acquired Clayton Shannon from the waiver wire. |
| 09-05-1983 | The Boston Minutemen have moved Mike Criswell and Bob Studstill to the active roster. The Boston Minutemen have moved Bob Lytle and Lavale Hamm to the inactive roster. |
| 09-05-1983 | The Boston Minutemen have waived Clayton Shannon. |
| 08-08-1983 | The Boston Minutemen have placed Clayton Shannon on the trade block. |
| 01-10-1983 | The Boston Minutemen have acquired Clayton Shannon from the waiver wire. |
| 01-03-1983 | The Winnipeg Mastodon have waived Clayton Shannon. |
| 12-20-1982 | The Winnipeg Mastodon have moved Hal Vanoy to the active roster. The Winnipeg Mastodon have moved Clayton Shannon to the inactive roster. |
| 10-11-1982 | The Winnipeg Mastodon have moved Pepper Jolly and Clayton Shannon to the active roster. The Winnipeg Mastodon have moved Zack Hall to the inactive roster. |
| 10-04-1982 | The Winnipeg Mastodon have moved Brandon Brodnax and Jeff Panelli to the active roster. The Winnipeg Mastodon have moved Clayton Shannon to the inactive roster. |
| 05-02-1982 | The Winnipeg Mastodon have moved Clayton Shannon and Clarence Squyres to the active roster. The Winnipeg Mastodon have moved Brandon Brodnax and Bruce Jauron to the inactive roster. |
| 09-13-1981 | The Winnipeg Mastodon have moved Gary Phillips to the active roster. The Winnipeg Mastodon have moved Clayton Shannon to the inactive roster. |
| 09-06-1981 | The Winnipeg Mastodon have moved Clayton Shannon to the active roster. The Winnipeg Mastodon have moved Gary Phillips to the inactive roster. |
| 09-06-1981 | The Winnipeg Mastodon have moved Gary Phillips to the active roster. The Winnipeg Mastodon have moved Clayton Shannon to the inactive roster. |
| 08-30-1981 | The Winnipeg Mastodon have moved Clayton Shannon to the active roster. The Winnipeg Mastodon have moved Gary Phillips to the inactive roster. |
| 08-24-1981 | The Winnipeg Mastodon have moved Brandon Brodnax to the active roster. The Winnipeg Mastodon have moved Clayton Shannon to the inactive roster. |
| 05-03-1981 | The Winnipeg Mastodon have moved Clayton Shannon and Shaun Simpson to the active roster. The Winnipeg Mastodon have moved Vince Scott and Charlie Reynolds to the inactive roster. |
| 08-31-1980 | The Winnipeg Mastodon have moved Gary Phillips to the active roster. The Winnipeg Mastodon have moved Clayton Shannon to the inactive roster. |
| 08-24-1980 | The Winnipeg Mastodon have moved Clayton Shannon to the active roster. The Winnipeg Mastodon have moved Gary Phillips to the inactive roster. |
| 08-17-1980 | The Winnipeg Mastodon have moved Gary Phillips and Charlie Reynolds to the active roster. The Winnipeg Mastodon have moved Bob Studstill and Clayton Shannon to the inactive roster. |
| 08-10-1980 | The Winnipeg Mastodon have moved Clayton Shannon and Dwaine Bulluck to the active roster. The Winnipeg Mastodon have moved Gary Phillips and Bubby Stanley to the inactive roster. |
| 08-10-1980 | The Winnipeg Mastodon have moved Vince Scott to the active roster. The Winnipeg Mastodon have moved Clayton Shannon to the inactive roster. |
| 01-20-1980 | The Winnipeg Mastodon have moved Clayton Shannon to the active roster. The Winnipeg Mastodon have moved Vince Scott to the inactive roster. |
| 10-15-1979 | The Winnipeg Mastodon have acquired Clayton Shannon from the waiver wire. |
| 09-16-1979 | The Cleveland Ironmen have automatically waived Clayton Shannon to comply with the 53-man roster limit. |
| 09-10-1979 | The Cleveland Ironmen have acquired Clayton Shannon from the waiver wire. |
| 09-10-1979 | The Cleveland Ironmen have waived Clayton Shannon. |
| 09-10-1979 | The Cleveland Ironmen have acquired Clayton Shannon from the waiver wire. |
| 09-10-1979 | The Cleveland Ironmen have waived Clayton Shannon. |
| 09-10-1979 | The Cleveland Ironmen have acquired Clayton Shannon from the waiver wire. |
| 09-09-1979 | The New Jersey Jokers have automatically waived Clayton Shannon to comply with the 53-man roster limit. |
| 12-19-1977 | The New Jersey Jokers have moved Duane Glennie to the active roster. The New Jersey Jokers have moved Clayton Shannon to the inactive roster. |
| 12-19-1977 | The New Jersey Jokers have moved Clayton Shannon to the active roster. |
| 10-23-1977 | The New Jersey Jokers have moved Earl Ilgenfritz to the active roster. The New Jersey Jokers have moved Clayton Shannon to the inactive roster. |
| 08-08-1977 | The New Jersey Jokers have moved Clayton Shannon and Richard McGee to the active roster. |
Quarterback