This list will be updated on a roughly bi-weekly basis to account for changes based on player performance, injuries, and loss/gain of playing opportunity.
Also, as players on the list lose their rookie eligibility, surpass 130 AB or 50 IP in the majors, they will 'graduate' from the list.
Here's the update for mid-April - most stats are through April 30th (a few minor leaguers stats run through May 1st):
Top 25 AL Prospects for 2008 and 20091. (-) Evan Longoria, 3B, TBTB: .259 BA / .871 OPS, 10 r, 3 HR, 10 rbi, 2 sb
2. (+3) Jeff Clement, C, SEAAAA Tacoma: .397 BA / 1.227 OPS - 21 r, 5 HR, 20 rbi, 22 bb, 12 K in 78 AB
SEA: 1-for-1
Clement was called up on 4/30 and should immediately garner the bulk of the Mariners DH at-bats, along with occasionally spelling Kenji Johjima behind the plate. He's immediately a Top 10 catcher in mixed leagues.
3. (+2) Joba Chamberlain, RHP, NYY
NYY: 11.1 ip, 8 h, 2 er, 3 bb, 14 K - 1.59 ERA / 0.97 WHIP
4. (+2) Carlos Gonzalez, OF, OAK
AAA Sacramento: .343 BA / .925 OPS - 11 r, 3 HR, 10 rbi, 18 bb, 14 K in 70 AB (.385 BA over last 10 games)
5. (+10) Wladimir Balentien, OF, SEAAAA Tacoma: .254 BA / .948 OPS - 11 r, 6 HR, 20 rbi, 1 sb, 7 bb, 11 K in 63 AB
SEA: 2-for-4, HR, 3 rbi
Balentien was called up on 4/30 and went 2-for-4 with a home run and 3 rbi in his first game. What's even more impressive is that the homer was against Cliff Lee, probably the most dominant pitcher in baseball at the moment. With Brad Wilkerson out of the picture, Balentien is the de facto regular RF for Seattle.
6. (+1) Brandon Wood, 3B/SS, LAA
AAA Salt Lake: .273 BA / .947 OPS - 20 r, 8 HR, 18 rbi, 1 sb, 5 bb, 29 K in 88 AB
LAA: 1-for-4, 1 r, 1 bb, 3 K
Wood's K-Rate, which was a horrid .392 in mid-April, actually dropped to a more respectable .244 over his last 41 Triple-A at-bats. He's currently up with the big club in a reserve role, so he hasn't yet 'arrived'.
7. (+5) Luke Hochevar, RHP, KCAAA Omaha: 17.1 ip, 11 h, 7 r (5 er), 6 bb, 12 K - 2.60 ERA / 0.98 WHIP
KC: 10.2 ip, 15 h, 7 er, 5 bb, 8 K, 5.91 ERA, 1.88 WHIP
Hochevar was called up on 4/20 and was less than stellar in his first start (4.2 ip, 9 h, 6 er, 3 bb, 5 K), but bounced back nicely in his second start (6 ip, 6 h, 1 er, 2 bb, 3 K). Obviously he's going to have his ups and downs, but it's good to see that he quickly bounced back from a sub-par outing with a quality start.
8. (+8) Nick Adenhart, RHP, LAAAAA Salt Lake: 31 ip, 18 h, 3 er, 15 bb, 19 K - 0.87 ERA / 1.06 WHIP / .170 BAA
Adenhart was called up and made his major league debut on May 1st. He struggled with his control against the Athletics allowing five walks over two innings, along with three hits given up he allowed five earned runs. Like Hochevar, look for him to bounce back in his next start.
9. (+4) Adam Miller, RHP, CLEAAA Buffalo: 9 ip, 8 h, 3 r (0 er), 4 bb, 6 K - 0.00 ERA / 1.33 WHIP / .222 BAA
Miller has recovered from the blister issues he experienced at the very start of spring training and is catching up in his preparation. He's been effective in his first two starts with Triple-A Buffalo so far.
10. (NR) Greg Smith, LHP, OAKOAK: 33 ip, 24 h, 12 r (10 er), 11 bb, 21 K - 2.73 ERA / 1.06 WHIP / .209 BAA
Smith has come seemingly out of nowhere - he was one of the players coming over to Oakland in the Dan Haren deal. Smith was Arizona's #13 prospect heading into the season. He had a strong 12 start campaign in 2007 at Double-A Mobile (3.36 ERA, 1.13 WHIP and 62 K, 14 BB over 69 ip), but was pretty much average in 10 starts after his mid-season promotion to Triple-A Tucson (3.78 ERA, 1.52 WHIP, 34 K, 18 bb over 52 ip). Smith has been very consistent across his five starts with Oakland.
11. (-3) Gio Gonzalez, LHP, OAK
AAA Sacramento: 23 ip, 24 h, 10 er, 11 bb, 21 K - 3.91 ERA / 1.52 WHIP
12. (-3) Ian Kennedy, RHP, NYYNYY: 19 ip, 23 h, 18 er, 17 bb, 15 k - 8.53 ERA / 2.11 WHIP
Kennedy's struggles are well documented. Expect him to be back, and effective, once he shows he has thing straightened out at Triple-A Scranton-Wilkes Barre.
13. (NR) Armando Galarraga, RHP, DET
Triple-A Toledo: 12 ip, 7 h, 3 er, 1 bb, 11 K - 2.25 ERA / 0.67 WHIP / .163 BAA
DET: 18 ip, 7 h, 5 r (3 er), 6 bb, 13 K - 1.50 ERA / 0.72 WHIP / .209 BAA
Galarraga has been a major surprise. Enjoy the ride while it lasts, he's likely to stick around and be a decent fourth starter, but his current level of success just isn't sustainable.
14. (-3) David Price, LHP, TBExtended Spring Training, likely headed to High-A Vero Beach in late May.
Price has been in extended spring training longer than expected recovering from elbow discomfort he experienced in late March. The latest plan is for him to make three or four starts at extended spring training starting May 2nd, then he'll likely head to High-A Vero Beach. He should be heading to Vero Beach roughly around May 20th barring any setbacks.
15. (-1) Matt Wieters, C, BALHigh-A Frederick: .338 BA / 1.024 OPS - 15 r, 5 HR, 15 rbi in 71 AB
Wieters has cooled from his blistering start to the tune of a .265 batting average over his last 10 April games and just one home run over his last 34 AB. He started April with four home runs in his first 37 AB.
16. (+3) Radhames Liz, RHP, BALTriple-A Norfolk: 27.2 ip, 26 h, 17 r (14 er), 9 bb, 29 K - 4.55 ERA / 1.27 WHIP / .255 BAA
Liz was very solid in his final two starts of April with 13 ip, 5 h, 1 er, 5 bb, 15 K. He just needs to show more consistency, when he's good - he's very good, and when he's bad - he's horrible!
17. (+5) Aaron Laffey, LHP, CLE
Triple-A Buffalo: 26 ip, 24 h, 9 r (8 er), 6 bb, 20 K - 2.77 ERA / 1.15 WHIP / .274 BAA
CLE: 5.2 ip, 3 h, 4 er, 1 bb, 1 K
Laffey had a no-hitter through five innings in his first start with Cleveland before giving up three hits in the sixth.
18. (+5) Jed Lowrie, SS, BOSTriple-A Pawtucket: 4-for-25, 2B, 3B, 7 bb, 8 K
BOS: .323 BA / .791 OPS - 4 r, 0 HR, 5 rbi in 31 AB
Lowrie has performed much better than expected during his stint with Boston. Expect him to be back at Triple-A Pawtucket when Sean Casey comes off the DL.
19. (NR) Garrett Olson, LHP, BALTriple-A Norfolk: 24.1 ip, 22 h, 5 er, 11 bb, 25 K - 1.85 ERA / 1.36 WHIP
BAL: 6.2 ip, 4 h, 2 er, 5 bb, 6 K in his first start
20. (-3) Jake McGee LHP, TBDouble-A Montgomery: 23.2 ip, 19 h, 15 r (14 er), 10 bb, 27 K - 5.32 ERA / 1.23 WHIP / .216 BAA
Jake has had trouble recently, especially in his final April start: 4.2 ip, 8 h, 7 er, 1 bb, 6 K
21. (-3) Travis Snider, OF, TORHigh-A Dunedin: .279 BA / .891 OPS - 15 r, 4 HR, 7 rbi in 61 AB
Double-A New Hampshire: .135 BA, 5 r, 1 HR, 3 rbi in 37 AB
Snider was promoted to Double-A, despite really doing anything to prompt the promotion. He's really grappling right now at the new level.
22. (+3) Chris Davis, 3B, TEXDouble-A Frisco: .304 BA / .904 OPS - 20 r, 6 HR, 18 rbi, 3 sb, 27 K in 92 AB
Davis has dropped his K-Rate from .320 over his first 50 ABs down to .262 over his last 42 April ABs.
23. (+1) David Purcey, LHP, TORTriple-A Syracuse: 33 ip, 19 h, 8 r (6 er), 11bb, 39 K - 1.64 ERA / 0.91 WHIP / .168 BAA
TOR: 4.1 ip, 2 h, 1 er, 7 bb, 3 K
Purcey's control was awful in his first start for Toronto - the one bright spot was the fact that the opposing hitters collectively hit just .154 against him. Of course it's hard to get hits when you're not seeing hittable pitches.
24. (-4) Reid Brignac, SS, TB
Triple-A Durham: .244 BA / .700 OPS - 14 r, 2 HR, 11 rbi, 1 sb in 90 AB (hitting .262 over his last 10 April games)
25. (-4) Brett Gardner, OF, NYY
Triple-A Scranton-WB: .299 BA / .870 OPS - 19 r, 2 HR, 11 rbi, 4 SB (4 CS) in 87 AB (hitting just .222 over his last 10 April games)
Mid-April Update: Top 25 AL Prospects for 2008 and 2009May Update: Top 25 NL Prospects for 2008 and 2009GRADUATED FROM THE LIST:
Carlos Gomez, OF, MIN (Highest Rank #2)MIN: .265 BA - 2B(6), 3B(1), HR(1), 14 r, 7 rbi, 11 sb in 102 AB
Jacoby Ellsbury, OF, BOS (Highest Rank #3)
BOS: .280 BA - HR(3), 20 r, 11 rbi, 8 sb in 75 AB
Daric Barton, 1B, OAK (Highest Rank #2)OAK: .222 BA / .683 OPS - 2B(3), 3B(1), 9 r, 4 rbi, 13 bb, 17 K in 54 AB
Clay Buchholz, RHP, BOS (Highest Rank #3)
BOS: 11 ip, 10 h, 5 r (4 er), 5 bb, 10 K - 3.27 ERA / 1.36 WHIP / .233 BAA
Nick Blackburn, RHP, MIN (Highest Rank #10)MIN: 17.2 ip, 20 h, 7 er, 3 bb, 11 K - 3.57 ERA / 1.302 WHIP