Most of the big name prospects are up for the clubs in the NL East: Danny Espinosa, Dillon Gee, Mike Minor, Brandon Beachey, Dominic Brown, etc. But some impact players are still biding their time in the minors. For the Nats the big guns are a year or two away (Stras, Harper). But one player who isn't really a prospect but could help this season is Oliver Perez. His fastball is back in the low 90's, he is comanding his slider once again and he only has 3 walks in 21.1 innings. Before you criticize check out my write up:

http://www.hits4brains.com/2011/06/prospecting-for-golden-tickets-to-show_20.html