Let's do this by team...
Round Rock Express
| Name | Position | 2009 team |
| J. Banks | Pitcher | Triple-A Portland/San Diego |
| G. Chacin | Pitcher | AA Reading/AAA Lehigh Valley |
| R. Corcoran | Pitcher | AAA Tacoma/AAA Round Rock |
| C. Daigle | Pitcher | AAA Round Rock |
| E. Englebrook | Pitcher | AA Corpus/AAA Round Rock |
| W. Lopez | Pitcher | Corpus/Houston |
| S. Loux | Pitcher | AAA Salt Lake/Angels |
| G. Majewski | Pitcher | AAA Lehigh Valley |
| P. Trinidad | Pitcher | Corpus/Round Rock |
| J. Valdez | Pitcher | AA Trenton/AAA Scranton-WB |
| A. Van Hekken | Pitcher | Corpus Christi/Round Rock |
| W. Wright | Pitcher | Round Rock/Houston |
| K. Cash | Catcher | AAA Scranton-WB |
| J. Castro | Catcher | Lancaster/Corpus |
| M. Kata | Infielder | Round Rock/Houston |
| E. Maysonet | Infielder | Round Rock/Houston |
| D. Meyer | Infielder | Corpus |
| O. Navarro | Infielder | AA West Tenn/AAA Tacoma |
| C. Shelton | Infielder | AAA Tacoma |
| B. Bogusevic | Outfielder | Round Rock |
| C. DeLome | Outfielder | Corpus |
| D. Locke | Outfielder | Corpus |
| Y. Ramirez | Outfielder | Round Rock |
Corpus Christi
| Name | Position | 2009 team |
| F. Abad | Pitcher | Lancaster/Corpus |
| E. Abreu | Pitcher | Lancaster/Corpus/Round Rock |
| D. Arguello | Pitcher | Corpus |
| T. Burton | Pitcher | Corpus/Round Rock |
| J. Johnson | Pitcher | Round Rock |
| C. Lo | Pitcher | Lancaster/Corpus |
| T. Lumsden | Pitcher | Corpus/Round Rock |
| J. Lyles | Pitcher | Lexington |
| D. Meszaros | Pitcher | Lexington/Corpus |
| M. Nevarez | Pitcher | A Hickory/Lexington |
| S. Perez | Pitcher | Corpus |
| J. Wells | Pitcher | AA West Tenn/AAA Tacoma |
| B. Esposito | Catcher | Corpus/Round Rock |
| L. Santangelo | Catcher | Round Rock |
| M. Cabral | Infielder | Lancaster |
| K. Clemens | Infielder | Lancaster |
| G. Duran | Infielder | AAA OK City/Corpus |
| J. Florentino | Infielder | Corpus |
| M. Garciaparra | Infielder | AA Huntsville/AAA Nashville |
| W. Sutil | Infielder | Corpus |
| J. Van Ostrand | Infielder | Corpus |
| D. Cook | Outfielder | AA Birmingham/AAA Charlotte |
| J. Gaston | Outfielder | Lancaster |
| J. Shuck | Outfielder | Lancaster |
| T. Steele | Outfielder | Lancaster |
Lancaster JetHawks
| Name | Position | 2009 team |
| D. Berner | Pitcher | Tri-City |
| L. Cespedes | Pitcher | Lancaster |
| B. Dydalewicz | Pitcher | Lexington |
| K. Godfrey | Pitcher | Lexington |
| K. Greenwalt | Pitcher | Lexington |
| D. Keuchel | Pitcher | Tri-City |
| A. Mowdy | Pitcher | Lexington/Lancaster |
| R. Seaton | Pitcher | Lexington |
| P. Urckfitz | Pitcher | Lancaster |
| B. Wabick | Pitcher | Lexington |
| E. Walker | Pitcher | A Charleston/Indep. Gary |
| S. Wolf | Pitcher | Lancaster |
| J. Comadena | Catcher | Lexington/Lancaster |
| F. Hernandez | Catcher | Lexington |
| J. Lopez | Catcher | GCL/Corpus |
| B. Butera | Infielder | Tri-City |
| A. Cartwright | Infielder | Lexington |
| R. Contreras | Infielder | VSL San Diego |
| D. Flores | Infielder | Lancaster |
| M. Ori | Infielder | Corpus |
| E. Rosario | Infielder | Lexington |
| B. Wikoff | Infielder | Tri-City/Lexington |
| J. Austin | Outfielder | Lexington |
| B. Barnes | Outfielder | Lancaster |
| J. Flores | Outfielder | Corpus |
| F. Parejo | Outfielder | AA Huntsville/AAA Nashville |
Lexington Legends
| Name | Position | 2009 team |
| T. Bushue | Pitcher | GCL Astros |
| J. Cisnero | Pitcher | Greeneville |
| K. Clark | Pitcher | Tri-City |
| R. Donovan | Pitcher | Tri-City |
| D. Duncan | Pitcher | Tri-City/Lexington |
| J. MacDonald | Pitcher | Tri-City |
| J. Minaya | Pitcher | Greeneville |
| C. Pitkin | Pitcher | Tri-City |
| D. Sarisky | Pitcher | Tri-City |
| M. Schurz | Pitcher | Tri-City |
| J. Trinidad | Pitcher | Greeneville |
| B. Walker | Pitcher | Tri-City |
| J. Fixler | Catcher | Lexington |
| R. Garcia | Catcher | Lexington |
| J. Lopez | Catcher | GCL/Corpus |
| J. Altuve | Infielder | Greeneville |
| M. Arrendell | Infielder | Greeneville |
| A. Bray | Infielder | Greeneville |
| K. Hinze | Infielder | Lexington |
| J. Meyer | Infielder | Greeneville |
| J. Mier | Infielder | Greeneville |
| A. Simunic | Infielder | Lexington |
| J. Goebbert | Outfielder | Tri-City |
| G. Hogue | Outfielder | Greeneville |
| B. Kemp | Outfielder | Tri-City |
| J. Martinez | Outfielder | Greeneville/Tri-City |
