| Date | Transaction |
| 02-28-2010 | Sheldon Sienkiewicz has retired from the Boston Hornets. |
| 09-09-1996 | The Boston Hornets have moved Sheldon Sienkiewicz to the active roster. The Boston Hornets have moved Daniel Waterfield to the inactive roster. |
| 09-09-1996 | The Boston Hornets have acquired Sheldon Sienkiewicz from the waiver wire. |
| 09-01-1996 | The Los Angeles RAMS have waived Sheldon Sienkiewicz. |
| 09-01-1996 | The Los Angeles RAMS have moved Honolulu Fanucci, Koren Wisniewski, Darrell Hughes, Vinny "the Hammer" Zuzzio, Cecil Coleman, Jim Mitchell, Lamar Crudup, Chris Gordon, Anthony Lazetich, and Johnny Rowe to the active roster. The Los Angeles RAMS have moved Leonardo Redden, Wilson Shiner, Eddie Jenkins, Dalva Hall, Joe Brown, Bill Psaltis, Cotton Earwig IV, Bill Herron, Ronnie Arrington, and Sheldon Sienkiewicz to the inactive roster. |
| 08-05-1996 | The Los Angeles RAMS have moved Ronnie Arrington, Sheldon Sienkiewicz, Bill Herron, Eddie Jenkins, Ron Heath, Wilson Shiner, and Dalva Hall to the active roster. The Los Angeles RAMS have moved Vinny "the Hammer" Zuzzio, Koren Wisniewski, Cecil Coleman, Lamar Crudup, Darrell Hughes, Honolulu Fanucci, and Johnny Rowe to the inactive roster. |
| 04-28-1996 | The Los Angeles RAMS have acquired Sheldon Sienkiewicz from the waiver wire. |
| 09-11-1995 | The Los Angeles RAMS have waived Sheldon Sienkiewicz. |
| 09-03-1995 | The Los Angeles RAMS have moved Mike Larpentar, Dave Kincaid, John "Busta" Rhymes, John Maggs, Cedric Johnson, and Tom Gilbert to the active roster. The Los Angeles RAMS have moved Mitch Rashad, John Lungren, Lloyd Powe, Jimmy Saimes, Tex Rosatti, Jim Piccolo, Gary Garbagininini, and Sheldon Sienkiewicz to the inactive roster. |
| 04-30-1995 | The Los Angeles RAMS have moved Sheldon Sienkiewicz to the active roster. |
| 09-05-1994 | The Los Angeles RAMS have moved Terry Stieve to the active roster. The Los Angeles RAMS have moved Sheldon Sienkiewicz to the inactive roster. |
| 09-04-1994 | The Los Angeles RAMS have acquired Sheldon Sienkiewicz from the waiver wire. |
| 08-21-1994 | The Washington Xenomorphs have waived Sheldon Sienkiewicz. |
| 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. |
| 08-14-1994 | The Washington Xenomorphs have moved Al Rowe, David Kosins, Jamal DeLong, Larry Lowe, Ben Flanagan, Sheldon Sienkiewicz, John Spencer, Ken Coleman, Chip Burnette, Porter Tyler, Randy Slater, George Hill, Mike Barrett, Mel Niemi, Garland Liebenstein, Larry McCormick, Eddie Maxie, John Lungren, Junior Barnes, Ed Bouie, Fay Stoeklein, Jim Bailey, Joe Brown, Frank Young, John Loucks, and Chuck Smith to the active roster. The Washington Xenomorphs have moved Earl Williams, Malcolm Faulk, Ephraim Grant, Jon Scott, Joe Tillman, Lamar Crudup, Kelen Williamson, Jack Chelf, Dedrick Berti, Jim Tschappatt, Nate Matthews, Travis Boso, Joe Davis, Aaron Compton, 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 inactive roster. |
Wide Receiver