Who Needs A Bullpen?

A few days ago I looked at pitchers who had trouble getting through five or more innings per start in a season. Today I want to do the opposite. In order to differentiate between innings as a starter and reliever in the same season, I limited the search to the years 1957-2007. Here's the list of every pitcher to make more than 20 starts in a season and average eight or more innings per start.

Name	Year	Starts	IP	IP/GS
Bob Gibson	1969	35	314.0	8.97
Bob Gibson	1968	34	304.7	8.96
Rick Langford	1980	33	287.7	8.72
Gaylord Perry	1974	37	322.3	8.71
Bob Gibson	1970	34	294.0	8.65
Mark Fidrych	1976	29	249.3	8.60
Juan Marichal	1968	38	326.0	8.58
Gaylord Perry	1972	40	341.7	8.54
Juan Marichal	1966	36	306.0	8.50
Jim Palmer	1975	38	322.3	8.48
Frank Tanana	1976	34	288.3	8.48
Steve Carlton	1972	41	346.3	8.45
Steve McCatty	1981	22	185.7	8.44
Catfish Hunter	1975	39	328.0	8.41
Gaylord Perry	1973	41	344.0	8.39
Mickey Lolich	1971	45	376.0	8.36
Ferguson Jenkins	1971	39	325.0	8.33
Nolan Ryan	1973	39	323.7	8.30
Juan Marichal	1969	36	298.7	8.30
Catfish Hunter	1976	36	298.7	8.30
Gaylord Perry	1969	39	323.3	8.29
Bert Blyleven	1976	36	297.7	8.27
Mike Caldwell	1978	34	281.0	8.26
Gaylord Perry	1975	37	305.7	8.26
Denny McLain	1968	41	336.0	8.20
Luis Tiant	1974	38	311.3	8.19
Bob Gibson	1965	36	294.7	8.19
Jim Palmer	1977	39	319.0	8.18
Bob Gibson	1972	34	278.0	8.18
Tom Seaver	1971	35	285.7	8.16
Larry Dierker	1969	37	301.3	8.14
Rick Langford	1981	24	195.3	8.14
Sandy Koufax	1965	41	333.7	8.14
Bert Blyleven	1973	40	325.0	8.13
Nolan Ryan	1977	37	299.0	8.08
Greg Maddux	1994	25	202.0	8.08
Ron Guidry	1983	31	250.3	8.08
Nolan Ryan	1974	41	331.0	8.07
Tom Seaver	1970	36	290.3	8.06
Vida Blue	1976	37	298.3	8.06
Tom Seaver	1973	36	290.0	8.06
Mario Soto	1983	34	273.7	8.05
Ferguson Jenkins	1972	36	289.3	8.04
Don Drysdale	1964	40	321.3	8.03
Bill Lee	1973	33	265.0	8.03
Vern Law	1959	33	265.0	8.03
Phil Niekro	1967	20	160.3	8.02
Gaylord Perry	1970	41	328.7	8.02
Camilo Pascual	1963	31	248.3	8.01
Bob Gibson	1966	35	280.3	8.01
Jim Colborn	1973	36	288.3	8.01
Warren Spahn	1958	36	288.3	8.01
Ferguson Jenkins	1970	39	312.3	8.01
Ferguson Jenkins	1974	41	328.3	8.01
Vida Blue	1971	39	312.0	8.00
Steve Carlton	1980	38	304.0	8.00

That's a lot of innings pitched! It's interesting to me that of the 56 seasons listed, 39 of them took place in the decade from 1968-1977. A number of guys had more than one season on the list: Bert Blyleven (2), Bob Gibson (6), Catfish Hunter (2), Ferguson Jenkins (4), Gaylord Perry (6), Jim Palmer (2), Juan Marichal (3), Nolan Ryan (3), Rick Langford (2), Steve Carlton (2), Tom Seaver (3), and Vida Blue (2) were the multiple entrants. Greg Maddux is the only pitcher since 1983 to appear on the list. I doubt another guy will show up on it anytime soon. Say the average starter makes 33 starts per year now; he would have to pitch 264 innings in those starts to make the cut.