| Date | Transaction |
| 08-05-1991 | The Washington Xenomorphs have moved Les Kovac, Danny Thomas, and Floyd Sykes to the active roster. The Washington Xenomorphs have moved Cedric Williams, Dee Caveness, and Scott Golsen to the inactive roster. |
| 08-05-1991 | The Washington Xenomorphs have waived Gary Bethea. |
| 04-28-1991 | The Washington Xenomorphs have acquired Gary Bethea from the waiver wire. |
| 08-20-1990 | The Washington Xenomorphs have moved Kevin Brown, Wilbur Cunningham, Pete Kahler, Henry Reed, Ephraim Grant, Chip Burnette, Mark Franklin, Mike Gossett, Joe Denfield, Steve Forrest, Michael Owens, John Watts, Milt Baldinger, Jon Scott, Joe Simon, Malcolm Faulk, Jim Mitchell, Cletidus Swann, Anthony Lazetich, Charle Summerell, John Kline, Mac Rembert, Ron Barni, and Kevon White to the active roster. The Washington Xenomorphs have moved Hal Putzier, Dan Johnson, Preston Proehl, Carl Abrams, Scott Golsen, Vic Dowden, Harry Scott, Wilber Prestel, Eugene Logan, Tiny Audick, Zeke Graham, Curt Nguyen, Jimmy Saimes, Ron Palmer, Dean Drzewiecki, Billy Joe Joyce, Travis Boso, Tyrone Bock, Freddie Stephens, Jim Johnson, Bob Cearing, and Jim Darkins to the inactive roster. |
| 08-20-1990 | The Washington Xenomorphs have waived Gary Bethea. |
| 04-29-1990 | The Washington Xenomorphs have acquired Gary Bethea from the waiver wire. |
| 09-04-1989 | The Florida Orcas have waived Gary Bethea. |
| 01-02-1989 | The Florida Orcas have moved Gary Bethea to the inactive roster. |
| 01-02-1989 | The Florida Orcas have acquired Gary Bethea from the waiver wire. |
| 09-11-1988 | The Washington Xenomorphs have automatically waived Gary Bethea to comply with the 53-man roster limit. |
| 09-05-1988 | The Washington Xenomorphs have moved Jim Mitchell, Joe Simon, Drew Chamberlain, Jimmy Conlin, Ron Barni, Alex Thomas, Steve Gurode, Devone Rivera, Alonzo Moss, Kevin Brown, Steve Forrest, Chase Jackson, Billy Barber, Kyle Davis, Kevin Annan, Eugene Sloan, James Jurgensen, and Malcolm Faulk to the active roster. The Washington Xenomorphs have moved Jim Garden, Fred Caleb, Hank Young, Curt Nguyen, Billy Joe Joyce, Ed Times, Freddie Stephens, Dan Stewart, Jeff Seymour, Jim Cross, Gary Bethea, Harold Muhammad, Duke Collins, Kerry Middleton, Hal Putzier, Dan Johnson, Eddie Garbarczyk, and Jimmy Saimes to the inactive roster. |
| 08-21-1988 | The Washington Xenomorphs have moved Kevin Annan, Joe Simon, Kevin Brown, Ron Barni, Billy Barber, Pete Kahler, Steve Forrest, Steve Mueller, Chase Jackson, Joe Sigurdson, Eugene Sloan, Alex Thomas, Malcolm Faulk, Steve Gurode, Drew Chamberlain, Gary Bethea, Mark Franklin, Devone Rivera, Harold Muhammad, and Jim Mitchell to the active roster. The Washington Xenomorphs have moved Bobby Odom, Billy Joe Joyce, Hal Putzier, Norman Rosenstiel, Chris Jolley, Ed Times, Mac Rembert, Jeff Seymour, Jim Cross, Eddie Garbarczyk, Ephraim Grant, Jimmy Saimes, Mack Calland, Bob Gradishar, Dan Stewart, Curt Nguyen, Bob Barnes, Charle Summerell, Fred Caleb, and Dee Caveness to the inactive roster. |
Defensive End