This year, I've changed the format of my ranking of the top 10 prospects in each organization. The criteria for organizing these lists are the same, but I have included a little more explanation of the state of the system and discuss any prospects (top 10 and beyond) who might help the major league team this year.
I've also folded the columns on sleeper prospects -- players who did not appear in the global top 100 but might make a big leap onto the middle of that list next year -- into these organizational reports, mentioning more than one prospect per team where it's warranted.
AL EAST | AL CENTRAL | AL WEST
NL EAST | NL CENTRAL | NL WEST
Arizona Diamondbacks
Org rank: 15
Farm system overview
Dealing Trevor Bauer for 50 cents on the dollar didn't help, nor did failing to get any of Atlanta's top six prospects in the Justin Upton trade, but the Diamondbacks are still very deep in arms and now oddly deep in shortstops who can field but don't get on base. Two solid draft classes have helped, as well as strong work on the development side in taking guys such as Matt Davidson, Adam Eaton and David Holmberg, and helping them exceed the limits of their raw tools.
2013 impact
Eaton and Tyler Skaggs are big league ready, Davidson is close but is now blocked, and they have two starter prospects in Andrew Chafin and Anthony Meo who might be better off in relief roles, where they'd also be close to contributing in the majors.
Sleeper
Stryker Trahan, their 2012 first-rounder, isn't under the radar but has the best chance of any of their non-top-100 guys to make a big move onto the list next year, a potential impact bat from the left side who has the quickness and arm to catch but needs a lot of work on receiving and especially blocking balls. Two smaller sleepers from this past draft: infielder Andrew Velazquez and right-hander Ben Eckels, their 7th- and 11th-round picks, respectively, who both looked very strong in rookie ball and might jump into the team's top 10 next winter.
Colorado Rockies
Org rank: 23
Farm system overview
It was a rough year on the farm for the Rockies, with Chad Bettis and Tim Wheeler missing all or most of the year due to injuries while Tyler Anderson's year started late due to a groin problem. Nolan Arenado took a huge step back with a poor performance (although he was young for his league) and plenty of reports from scouts that he was playing with little energy. There were some positives, though, such as the huge pro debut from first-round pick David Dahl, a strong -- if abbreviated -- year from former first-rounder Kyle Parker and signs of life from 2009 first-rounder Tyler Matzek, whose stuff was mostly back and who started throwing strikes again at the end of the year.
2013 impact
A healthy Wheeler could be a fourth outfielder for the Rockies this year, and left-hander Edwar Cabrera could bring his plus-plus changeup back to the majors if he can keep the fastball down in the zone more often.
Sleeper
I like both Tylers (Anderson and Matzek) to have strong 2013 seasons, but for a more under-the-radar candidate, Ryan Warner was a high school quarterback and two-way prospect who can really run, projects to have at least a 55-grade fastball and gets good rotation on his breaking ball, with a strong pitcher's build at 6-foot-7.
Los Angeles Dodgers
Org rank: 18
Farm system overview
The Dodgers put just two guys in the top 100, but had I gone another 40 to 50 names, you would have seen more blue on the list, led by Cuban bonus baby Yasiel Puig, who got only a little playing time this summer before a staph infection that required surgery and knocked him out of the Arizona Fall League. He's very strong and a physically well-developed 21-year-old, running well for his size but not enough to be a center fielder. Last year's top 10 included nine pitchers and one position player, but the additions of Puig and first-rounder Corey Seager restored a little more balance, although the strength of the system is still arms, many raw but with long-term upside.
2013 impact
Unless the Dodgers push Puig to fill an outfield hole they don't currently have, we're probably looking at just relievers for 2013 impact here -- lefties Paco Rodriguez and Chris Reed (still scheduled to work as a starter this year), maybe right-hander Chris Withrow if he ever throws enough strikes.
Sleeper
I caught right-hander Zach Bird in the Arizona Rookie League this summer, and the ninth-rounder out of a Mississippi high school looked like a steal for that round, the type of athletic pitcher with arm strength who would have gone in the top three rounds had he played in California or Florida. He has an average fastball/slider combination already along with a slow curveball in the low 70s. He didn't turn 18 until after he was drafted and has a very projectable 6-foot-3 frame, with room for another 20 to 25 pounds, and the chance for two above-average or better pitches in time.
San Diego Padres
Org rank: 6
Farm system overview
The top-ranked organization from last year graduated Yasmani Grandal and Yonder Alonso to the majors while top prospects Joe Ross and Casey Kelly missed large chunks of the year due to injuries, although neither ended up with surgery. The Padres supplemented the system with a strong draft of top high school arms, led by lefty Max Fried, while top catching prospect Austin Hedges had a strong full-season debut, continuing to impress with his bat even though his calling card has always been his defense.
2013 impact
Kelly should be in the major league rotation this year, although fastball command woes bedeviled him in his major league time in September. Jedd Gyorko is ready for a big league job at third base but is blocked at the moment by Chase Headley, and I don't think Gyorko's glove is ready for a move to second (assuming his feet will ever be ready for it). Robbie Erlin could surface as a back-end starter; he is an undersized lefty with command and control but is extremely fly ball-prone with a fringe-average fastball.
Sleeper
The Padres took two high-upside prep right-handers from Florida in the 2012 draft who slid in the draft after poor springs. Zach Eflin was up to 95 mph with a plus changeup but missed several weeks with bicep tendinitis before the draft, then missed the end of the summer after contracting mono. Walker Weickel struggled with velocity and command after getting his arm slot too high and losing angle on his curveball, but he's healthy and still very loose and projectable.
San Francisco Giants
Org rank: 26
Farm system overview
Several good starting pitching prospects highlight a system that's very light on bats right now and, after closer Heath Hembree, doesn't have much that's likely to help the major league team in 2013. I could see some of the Giants' second-tier arms becoming useful trade chips for them to add a piece in July, though, so they're not without assets, just without many potential stars.
2013 impact
Hembree is ready for the majors and could be Sergio Romo's long-term replacement, but beyond him, there's no one likely to contribute this year except in backup roles.
Sleeper
First-rounder Chris Stratton, a four-pitch guy who racked up huge strikeout totals in the SEC with a plus slider, and third-rounder Mac Williamson, a rare beast as a right-handed hitter with power who can run and throw enough to play a good right field, are both candidates to move into the top 100 next year. The Giants also moved right-hander Adalberto Mejia from the Dominican Summer League in 2011 straight to the full-season Sally League in 2012, where his three-pitch mix, including an average fastball and above-average curveball, produced solid results.