Baseball America's League Top 20 lists are generated from consultations with scouts and league managers. To qualify for consideration, a player must have spent at least one-third of the season in a league. Position players must have one plate appearance for every league game. Pitchers must pitch 1/3 inning for every league game, and relievers have to have made at least 20 appearances in full-season leagues and 10 in short-season ones.
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| League | Top Prospect, Scouting Reports | Chat |
| Arizona League | Hank Conger , c, Angels |
John Manuel |
| Gulf Coast League | Clayton Kershaw , lhp, Dodgers |
Alan Matthews |
| Pioneer League | Bryan Morris , rhp, Dodgers |
Bryan Smith |
| Appalachian League | Travis Snider , of, Blue Jays |
Matt Eddy |
| New York-Penn League | Jeremy Hellickson , rhp, Devil Rays |
John Manuel |
| Northwest League | Tyler Colvin , of, Cubs |
Aaron Fitt |
| Midwest League | Jay Bruce , of, Reds |
Jim Callis |
| South Atlantic League | Andrew McCutchen , of, Pirates |
Matt Meyers |
| California League | Reid Brignac , ss, Devil Rays |
Aaron Fitt |
| Carolina League | Chuck Lofgren , lhp, Indians |
Chris Kline |
| Florida State League | Homer Bailey , rhp, Reds |
J.J. Cooper |
| Eastern League | Philip Hughes , rhp, Yankees |
Alan Matthews |
| Southern League | Homer Bailey , rhp, Reds |
Chris Kline |
| Texas League | Alex Gordon , 3b, Royals |
Will Lingo |
| International League | Delmon Young , of, Devil Rays |
Matt Eddy |
| Pacific Coast League | Stephen Drew , ss, Diamondbacks |
Bill Ballew |
