| Date | Transaction |
| 02-28-2005 | Greg Kelley has retired from football. |
| 08-11-2002 | The New England Celtics have waived Greg Kelley. |
| 08-11-2002 | The New England Celtics have moved Deral Bannister to the active roster. The New England Celtics have moved Greg Kelley to the inactive roster. |
| 10-03-1999 | Greg Kelley of the New England Celtics is injured with a shoulder muscle strain and is expected to be out for approximately 15 days. |
| 08-16-1999 | The New England Celtics have acquired Greg Kelley from the waiver wire. |
| 09-08-1996 | The Boston Hornets have automatically waived Greg Kelley to comply with the 53-man roster limit. |
| 09-02-1996 | The Boston Hornets have moved Bill Williams, Joe Denfield, and Terrence Trafton to the active roster. The Boston Hornets have moved Randy Mazurek, Gerald Carter, and Greg Kelley to the inactive roster. |
| 08-11-1996 | The Boston Hornets have moved Randy Mazurek, Eddie Swain, John Veals, Gerald Carter, and Greg Kelley to the active roster. The Boston Hornets have moved Floyd Noble, Bill Williams, Joe Denfield, and Terrence Trafton to the inactive roster. |
| 09-04-1995 | Trade #67052 has been completed between the Washington Xenomorphs and the Boston Hornets. The Boston Hornets receive Joe Tillman (CB), Aaron Compton (DE), Greg Kelley (DE), Jim Tschappatt (LB) from the Washington Xenomorphs in exchange for Draft Pick - 1996 Round 1 (BOS), Draft Pick - 1998 Round 2 (BOS). |
| 09-03-1995 | The Washington Xenomorphs have moved Myron Ramsey, Dedrick Berti, Bill Howard, Jim Tschappatt, Nate Matthews, James Jurgensen, David Reese, Jim O'Brien, Harry Little, Kelen Williamson, Aaron Compton, Drew Brooks, Herbie Hall, Danny Thomas, and Gerald Croudip to the active roster. The Washington Xenomorphs have moved Eddie Jenkins, Paul Waite, Garland Liebenstein, Jamie Young, Tom Halloran, Mark Franklin, Malcolm Faulk, Mike Cox, Cotton Earwig IV, Kevin Marker, David Kosins, Paul Fulcher, Mike Shannon, Ben Flanagan, and Greg Kelley to the inactive roster. |
| 08-27-1995 | The Washington Xenomorphs have moved Eddie Jenkins, Paul Waite, Garland Liebenstein, Tom Halloran, Ephraim Grant, Chip Burnette, Mark Franklin, Malcolm Faulk, Mike Cox, Kevin Marker, David Kosins, Randy Slater, Jamal DeLong, Paul Fulcher, Curtis Bundra, Mike Shannon, Ben Flanagan, and Greg Kelley to the active roster. The Washington Xenomorphs have moved Myron Ramsey, Larry Johnson, Dedrick Berti, Bill Howard, Jim Tschappatt, Nate Matthews, James Jurgensen, David Reese, Jim O'Brien, Harry Little, Brandon Roberts, Kelen Williamson, Joe Davis, Aaron Compton, Herbie Hall, Danny Thomas, Gerald Croudip, and Earl Williams to the inactive roster. |
| 08-21-1995 | The Washington Xenomorphs have moved Larry Johnson, Dedrick Berti, Jim Tschappatt, Jeff Potter, Nate Matthews, James Jurgensen, David Reese, Jim O'Brien, Harry Little, Brandon Roberts, Lamar Crudup, Kelen Williamson, Joe Davis, Aaron Compton, Herbie Hall, Danny Thomas, Gerald Croudip, Bob Cearing, Radell Smith, Earl Williams, and Bill Smith to the active roster. The Washington Xenomorphs have moved Eddie Jenkins, Paul Waite, Adrian Myers, Pat Moore, Larry McCormick, Ephraim Grant, Jim Bailey, Malcolm Faulk, Mike Cox, Kevin Marker, Tim Nix, Porter Tyler, David Kosins, Randy Slater, Paul Fulcher, Tony Gantt, Curtis Bundra, Mike Shannon, Frank Young, Ben Flanagan, and Greg Kelley to the inactive roster. |
| 08-13-1995 | The Washington Xenomorphs have moved Saladin Griffin, Eddie Jenkins, Paul Waite, Kaseem Diehl, Adrian Myers, Pat Moore, Jamie Young, Milt Barkum, Ephraim Grant, Malcolm Faulk, Mike Cox, Dennis Brumfield, Kevin Marker, Ray Barnes, Porter Tyler, David Kosins, Randy Slater, Paul Fulcher, Tony Gantt, Mike Shannon, Frank Young, Ben Flanagan, and Greg Kelley to the active roster. The Washington Xenomorphs have moved Larry Johnson, Dedrick Berti, Jim Tschappatt, Jeff Potter, Nate Matthews, James Jurgensen, David Reese, Larry Carr, Jim O'Brien, Harry Little, Brandon Roberts, Lamar Crudup, Kelen Williamson, Joe Davis, Aaron Compton, Drew Brooks, Herbie Hall, Danny Thomas, Gerald Croudip, Bob Cearing, Radell Smith, Earl Williams, and Bill Smith to the inactive roster. |
| 12-05-1994 | The Washington Xenomorphs have moved Joe Tillman, Randy Slater, Danny Thomas, Mike Shannon, and Chuck Smith to the active roster. The Washington Xenomorphs have moved Jim O'Brien, Doug Crafts, Ted Fenner, David Kosins, and Greg Kelley to the inactive roster. |
| 11-28-1994 | The Washington Xenomorphs have moved Garland Liebenstein, Al Rowe, Frank Jefferson, and Greg Kelley to the active roster. The Washington Xenomorphs have moved Malcolm Faulk, Joe Tillman, Randy Slater, and Chuck Smith to the inactive roster. |
| 08-28-1994 | The Washington Xenomorphs have moved Eddie Maxie, Joe Tillman, Porter Tyler, David Kosins, Jamal DeLong, Mike Barrett, Chuck Smith, and Ben Flanagan to the active roster. The Washington Xenomorphs have moved Nate Matthews, Mike Gossett, Kelen Williamson, Drew Brooks, Herbie Hall, Les Kovac, Danny Thomas, and Greg Kelley to the inactive roster. |
| 08-21-1994 | The Washington Xenomorphs have moved Earl Williams, Greg Kelley, Jon Scott, Lamar Crudup, Kelen Williamson, Jack Chelf, Dedrick Berti, Jim Tschappatt, Nate Matthews, Travis Boso, Joe Davis, Drew Brooks, Jim O'Brien, Herbie Hall, Brandon Roberts, Les Kovac, Danny Thomas, Gerald Croudip, Bob Cearing, Curtis Bundra, Mike Gossett, Larry Carr, and John Watts to the active roster. The Washington Xenomorphs have moved Al Rowe, David Kosins, Jamal DeLong, Ben Flanagan, Sheldon Sienkiewicz, John Spencer, Ken Coleman, Chip Burnette, Porter Tyler, George Hill, Mike Barrett, Mel Niemi, Larry McCormick, Eddie Maxie, John Lungren, Junior Barnes, Ed Bouie, Fay Stoeklein, Joe Brown, Doug Crafts, Frank Young, John Loucks, and Chuck Smith to the inactive roster. |
Defensive End