This is taken from Keith Law's top 100 prospects for 2009 on ESPN.com.

#6-Madison Bumgarner
A year ago, Bumgarner was a live arm, a projectable body, and a name to file away for the future. He only started throwing breaking balls late in his high school career, and the rudimentary secondary stuff plus his low arm slot had scouts -- including me -- assuming he was a long way away from the majors. His slider made enormous strides in his first full year in pro ball, and his changeup is now solid-average, no small feat for a pitcher who throws from a low 3/4 slot. He's unusual for pitchers of his ilk in that his arm action is fairly short and compact; many pitchers who throw from below 3/4 get long in the back, almost slinging the ball, and have trouble turning over a changeup or staying on top of breaking balls as a result. His command and control are both above-average, and he was aggressive in going after South Atlantic League hitters, who stood little chance against him. The Giants were careful with Bumgarner in 2008, but there's a good chance he finishes this year in Double-A and shows up in the majors at some point in 2010.

#8- Buster Posey
Posey presents a very balanced set of tools that, given his position, make him among the most valuable properties in the minor leagues. A recent convert from shortstop who also pitched a little in college, Posey is a plus defensive catcher with a plus arm (he pitched in the low 90s), soft hands, and a lot of energy at a position that demands it. At the plate, he has a compact stroke, excellent bat control, and a good eye, so while he doesn't project to hit for more than average power, he should make plenty of hard contact and end up a doubles hitter with 15-20 home runs per year. The combination of a projected plus hit tool and currently plus defense make him a very high-probability prospect -- he plays in the big leagues no matter what, be it as a quality backup if he never improves at all or as a star everyday catcher if he reaches his offensive ceiling.
Two players in the top 10 is just amazing. Baseball America has the Giants organization ranked a little bit ahad of where Law puts us but that's ok. Sabean has done a great job rebuilding the farm that he himself ruined trying to build around Barry. He even did that poorly but has redeemed himself this offseason and with the strength of the farm. The future looks very bright for the Giants.