Seems like we see a lot of diaries asking for breakout prospects, prospects who's stock will rise dramatically over the next season.  Well, BA lists a breakout prospect for each team in their Prospect Handbook.  Though you all might be interested:

ARI:  Tyrell Worthington, OF
ATL:  Tyler Flowers, 1B/C
BAL:  Tyler Henson, SS
BOS:  Will Middlebrooks, SS
CHI:  Robert Hernandez, RHP
CWS:  Brian Omagrosso, RHP
CIN:  Kyle Lotskar, RHP
CLE:  Sung-Wei Tseng, RHP
COL:  Michael McKenry, C
DET:  Wilkin Ramiriz, OF
FLA:  Logan Morrison, 1B
HOU:  Chris Johnson, 3B/1B
KC:   Jose Duarte, OF
LAA:  Trevor Reckling, LHP
LAD:  Javy Guerra, RHP
MIL:  Zach Braddock, LHP
MIN:  Deibinson Romero, 3B
NYM:  Greg Veloz, 2B
NYY:  Mark Melancon, RHP
OAK:  Josh Horton, SS
PHI:  Freddy Galvis, SS
PIT:  Marcus Davis, OF
STL:  Kyle McClellen, RHP
SD:   Raynor Contreras, 3B/2B
SF:   Waldis Joaquin, RHP
SEA:  Carlos Peguero, OF
TB:   Alex Cobb, RHP
TEX:  Christian Santana, C
TOR:  Kyle Ginley, RHP
WAS:  Hassan Pena, RHP