Here is what CBS had to say about him...
Tristian Cockcroft wrote:2. JOE BLANTON, SP
Age: 23, Throws: R, Ht: 6-3, Wt: 225, Acquired: OAK first round, 2002.
Those who read Moneyball are aware that Blanton was not the first player the Athletics landed with their seven first-round picks in the 2002 amateur draft, but he was the best. He has a mid-90s fastball and devastating breaking pitches (curveball and slider), and merely needs to improve at changing speeds to become a future staff ace. ETA: Mid-2005.
2003 Minor League Stats
2003 STATS W L ERA G GS CG SV IP H ER HR BB K WHIP
Class A Kane County 8 7 2.57 21 21 2 0 133 110 38 6 19 144 0.970
Double-A Midland 3 1 1.26 7 5 1 1 35.2 21 5 1 7 30 0.785