Keith Law: Top 100 Prospects
17. Eric Hosmer
Hosmer had just gotten his feet wet in pro ball after signing late last summer when the Pirates decided to drag him into their argument with Scott Boras and Pedro Alvarez, costing him a handful of at bats at the end of the Pioneer League's season; fortunately, he's talented enough to overcome the loss of a little development time. Hosmer was the top high school bat in the 2008 Rule 4 draft; he has quick wrists and shows big raw power, especially on any pitch that allows him to get his arms extended. Like a lot of left-handed power hitters, he doesn't like the ball in on his hands, but the hole is small and he can make a pitcher pay for a mistake that catches a little too much plate. Hosmer was also a decent pitching prospect in high school, touching 94 mph, so he has the arm to play right field and is probably enough of an athlete to handle it as well; at worst, he's a plus defender at first. He should be in the middle of Kansas City's lineup in three or four years.
44. Mike Moustakas
Moustakas had an odd year, to say the least: He spent the first half of the season as an awful defensive shortstop who couldn't hit a lick (but was young for his league), and the second half as an offensive machine who was sort of passable at third base.
Moustakas has a great swing, a smooth left-hander's stroke with good plate coverage and hard line-drive contact. He has intermittent power; his swing doesn't have great loft, and he needs to get his arms extended to really drive the ball, but it is in there when he gets the opportunity to use it. Physically, Moustakas offers no projection; he's 6-0, around 200 pounds or slightly more, and already thickset, with below-average speed.
He was never going to stay at short, and he may not stay at third, where he was improved but still has a lot of work to do on reading balls and improving reaction times. It has been said before, by me and others, that Moustakas should be behind the plate. He has a 65-70 arm, has a catcher's body, and caught a little bit in high school. The Royals have no catching prospects of note, and any questions about Moustakas' power become irrelevant if he's catching, because his bat will be plus back there at 15 homers a year or 30. As a catcher, he'd be top 20-25 overall.