I dont know if you have done the giants low levels which you did decide to do.

However this might give you something but maybe not knowing how much you have done. Give you a couple guys i see for the giants that look little under-rated.
Right-hander - Tim Alderson
Alderson, 20, finished 13-4 with a 2.79 ERA for the Giants' high-Class A San Jose team. He was named to the in-season and postseason California League All-Star squads.
Right-hander - Kyle Nicholson
Nicholson, 23, went 6-1 with a 1.15 ERA for short-season Salem-Keizer. In 62 2/3 innings, he yielded just 34 hits and walked three while striking out 54. His 0.59 WHIP (walks and hits allowed per inning pitched) looked like a typographical error.
Left-hander - Madison Bumgarner
Bumgarner, 19, was named the South Atlantic League's Pitcher of the Week five times, as he compiled a 15-3 record with a 1.46 ERA for Augusta. He also struck out 164 batters in 141 2/3 innings and was named MiLB.com's Most Spectacular Pitcher. Like Alderson, Bumgarner was also an in-season and postseason All-Star.