American League

4 Matt Wieters BAL C A .385 with 4 HRs. So far ahead of the other catching prospects it's not funny.

5 Mike Moustakas KC SS A Just .193 in the early going, but 9:6 K:BB offers some encouragement. Not worried about his bat.

6 Jacoby Ellsbury BOS OF A- 3 HR already is a surprise and an anomoly, but it's hard to see Crisp getting a lot of at-bats over him.

7 Travis Snider TOR OF A- We said he could move quickly and he did, getting AA promotion. Team's LF of the near future.

13 Reid Brignac TAM SS A- .258 overall and just .222 vs. LHP. Probably notthing more than a Sept. callup at this rate.

19 Jordan Walden LAA SP B+ 1.90 ERA, 21:6 K:BB in 23.2 innings so far in full season debut. He can be special. AL

20 Adam Miller CLE SP B+ 2008 debut came Wednesday and it was a success - 5 scorless with 2 K's. AL

24 Brett Anderson OAK SP B+ 3 greats starts 1 awful = 2.66, 23:5 K:BB, 20.1 innings. I might be underrating him at this slot.

25 Luke Hochevar KC SP B+ Debut didn't go so well, so not sure he sticks in the rotation from here on out.

29 Aaron Poreda CHW SP B Far from dominant, but 2.35 ERA gets it done every time. Still may wind up a reliver.

National League

21 Angel Villalona SF 3B A- Slumping badly…down to .222 with 16:4 K:BB, but not surprised or worried due to his age.

22 Matt Antonelli SD 2B B+ With Iguchi struggling, the opportunity is there, but .228 AVG isn't helping his cause.

23 Jason Heyward ATL OF B+ .312/.368/.416 is highly impressive for a kid his age (or anyone). Just needs to cut down on the K's.

28 Fernando Martinez NYM OF B+ Slow start, but four multi-hits games in his last six. 22:5 K:BB bears watching.

33 Ian Stewart COL 3B B Last 3 games - 6 H, 2 HR, 7 RBI. Could be his long-awaited breakout year.

37 Jeremy Jeffress MIL SP B Love the talent, but couldn't keep him in the 20s with the drug suspension and all.

42 Jamie Garcia STL SP B 2.35 ERA in 23 innings and 29:9 K:BB is encouraging. Probably a late-season call-up.

46 Tim Alderson SF SP B K's aren't there yet (11 in 21 IP), but he doesn’t turn 20 until November.

47 Juan Gutierrez ARI SP B 1 ER in 6 IP in his 08 debut. May get the first injury call-up.

48 Greg Reynolds COL SP B Last start was better, but 6.33 ERA and ugly 7:5 K:BB in 21 1/3 IP is concerning.

Each week we provide over 60 updates to our top 100 prospects (50 hitters and 50 pitchers) as well as our team-by-team top 5s in Prospect Central. Link: http://www.fantistics.com/baseball00/M-Prospect.htm. Not a member? Join today link:www.fantistics.com/join/join.php3