| 2004 cutdown: | MAH drops Nick BIERBRODT, Shelley DUNCAN, Mark L. JOHNSON, Alex OCHOA and Mark WOHLERS |
| 2009 cutdown: | HOU drops Dave BORKOWSKI, Freddie BYNUM, Brian COREY, Shelley DUNCAN, Tony Jr. GWYNN, Brad HENNESSEY, Mike LAMB, Rodrigo LOPEZ, McANULTY, Russ ORTIZ, Mark PRIOR, Curtis THIGPEN and Woody WILLIAMS |
| 2010 cutdown: | COL drops Brian N. ANDERSON, Buddy CARLYLE, Shelley DUNCAN, Alberto GONZALEZ, Tom GORDON, Jason GRILLI, Di HERNANDEZ, Shawn HILL, Tomo OHKA and Carlos TORRES |
| 2011 pre-season: | NBO selects Shelley DUNCAN with the 2011-NBO#7 draft choice |
| 2013 cutdown: | NBO drops David CARPENTER, Shelley DUNCAN, Rodrigo LOPEZ, Darnell MCDONALD, Javier VAZQUEZ and Chien-Ming WANG |
| 2013 waiver: | DAL picks up Yuniesky BETANCOURT and Shelley DUNCAN from waivers and drops Michael SCHWIMER and Ryan SWEENEY |
| 2014 cutdown: | DAL drops Heath BELL, Pedro CIRIACO, Chris COGHLAN, Tyler COLVIN, Collin COWGILL, Shelley DUNCAN, Joel HANRAHAN, Jeremy HORST, Jeffrey KARSTENS, Brandon LEAGUE, John MCDONALD, Jose MIJARES, Clayton RICHARD and Kelly SHOPPACH |