We break down the top five prospects for each organization for 2010, taking into consideration: games, at-bats, innings and major-league service time. We expect these players to have rookie status remaining heading into next year.

According to MLB rules: "A player shall be considered a rookie unless, during a previous season or seasons, he has (a) exceeded 130 at-bats or 50 innings pitched in the major leagues; or (b) accumulated more than 45 days on the active roster of a major league club or clubs during the period of 25-player limit (excluding time in the military service and time on the disabled list)."

Note: Statistics are those at each stop in the minors this season and age represents how old they will be on opening day 2010.

L.A. Angels of Anaheim

It started off as a rough season for the Angels, who lost Nick Adenhart in a late-night tragedy. They rebounded to run away in the AL West, though, thanks to rotational reinforcements from the farm system. The call-ups didn't do much more than serve as placeholders, but it was invaluable innings they ate before the rotation was bolstered by DL returnees and trades. The Angels used to boast one of the best farm systems in baseball, but years of call-ups and now aggressive trades have depleted the organization some.

1. Trevor Reckling, SP, 20

He has been generally underrated as a prospect, until now. As a 20-year-old in Double-A, he went 8-7 with a 2.93 ERA and a .244 batting-average against. He capped out at just over 150 innings this season and reached Triple-A before he can legally order a drink at a bar. You saw a parade of starters in the injury-hit Angels rotation and Reckling could be a leader of next year's wave.

2. Peter Bourjos, OF, 22

Bourjos is a speedy outfielder with some long-term projectability, but he doesn't boast enough power or get on base enough to make his 30-plus steals potential truly viable as an everyday outfielder on a top contender. Yet. He could develop into a better leadoff man with more consistency at the plate. He was a .300 hitter in the Double-A first half before tailing off.

3. Hank Conger, C, 22

It seems Conger has been around for a while as the 2006 first-rounder has merely progressed to Double-A in three-plus years. Injuries have slowed him some, but he stayed relatively healthy for the first time this season. He won't challenge for a roster spot in spring training but he could make himself a potential in-season call-up with a hot start in Triple-A. Fantasy owners love catching prospects with pop, mostly because they get sick of the Jason Kendalls of the league.

4. Mark Trumbo, 1B, 24

Trumbo was looking like a potential 30-homer star, but he was lapped in the organization by Kendry Morales and now is seriously blocked. Trumbo's 32 homers from 2008 became mostly doubles in Double-A this season. He will open 2010 in Triple-A with a chance to be a midseason call-up as a reserve. We still think he could be a sleeper as a power man in his prime.

5. Tyler Chatwood, SP, 20

The 2008 second-round pick has Pedro Martinez size, if not decent long-term projectability. He showed well in his first pro season and might be ready to handle the perils of the hitter-friendly high Class A California League. He is still a few years away from being major league mature, but he is worth stashing in long-term keeper leagues.

Best of the rest: SP Trevor Bell, SP Jordan Walden, SP Anthony Ortega, OF Randal Grichuk, OF Chris Pettit, SP Will Smith, SP Ryan Chaffee, C Bobby Wilson, 2B Ryan Mount, SS Andrew Romine, OF Clay Fuller, RP Francisco Rodriguez, SP Manaurys Correa, RP Rafael Rodriguez, RP Rich G. Thompson, 3B Luis Jimenez and RP Bobby Mosebach.

2009 rookies to exhaust eligibility (expected): RP Matt Palmer, SP Sean O'Sullivan, SP Mason Tobin, RP Kevin Jepsen and RP Jason Bulger.

Last year's top five here: Walden, SP Adenhart (deceased), OF Bourjos, C Conger and SP O'Sullivan.

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