Fantasy Baseball Rankings: Pitchers

Don't pay for pitching. Sure, Johan Santana has the potential for a 20 win season. But every picther has a great potential for injury... or a bad season. See Peavy 2006. A great way of ranking pitchers is the tier system, separated as ace, 2nd starter, 3rd starter etc. Verlander, with a world series appearance and a no-hitter under his belt... is my target for the 4th round.
Draft at least one in each category to fill out your rotation.
Ace
1 Johan Santana
2 Jake Peavy
3 Brandon Webb
4 Josh Beckett
5 Justin Verlander
6 John Lackey
7 Erick Bedard
8 CC Sebathia
9 Cole Hammels
10 Dan Haren

Tier 2
11 Aaron Harang
12 John Smoltz
13 Roy Oswalt
14 Carlos Zambrano
15 Chris Young
16 Felix Hernandez
17 Roy Halladay
18 Scott Kazmir
19 Fausto Carmona
20 Pedro Martinez

Tier 3
21 Francisco Liriano
22 Ben Sheets
23 Chad Billingsly
24 Rich Hill
25 Dice K Matsusaka
26 Tim Lincecum
27 Javier Vasquez
28 John Maine
29 Brett Myers
30 AJ Burnett
31 Matt Cain
32 Randy Johnson

Tier 4
33 Jona Chamberlain
34 Yovanni Gallardo
35 James Shields
36 Chin Ming Wang
37 Ted Lilly
38 Brad Penny
39 Ian Snell
40 Jeff Francis
41 Hiroki Kuroda
42 Jered Weaver
43 Derek Lowe
44 Kelvin Escobar
45 Jeremy Bonderman
46 Adam Wainright
47 Rich Harden
48 Phil Hughes

Tier 5
49 Tom Gorzelanny
50 Tim Hudson
51 Zack Grenkie
52 Gil Meche
53 Shawn Hill
54 Dustin McGowan
55 Joe Blanton
56 Andy Pettite
57 Clay Buckholz
58 Tim Hudson
59 Tom Glavin
60 Mike Mussina
61 Micha Owings
62 Barry Zito
63 Dontrell Willis
64 Tim Wakefield
65 Kenny Rogers