ERA winners -- who are these guys?

Jake Peavy is just the latest in baseball's long line of head-shaking winners of the ERA title.
Especially since expansion began.
Take a look at some of these guys. Steve Ontiveros, who won with a 2.08 ERA with Oakland in '94. Danny Darwin, 2.21 with Houston in 1990. Buzz Capra, 2.28 with Atlanta in '74. Diego Segui, 2.56 with Oakland in 1970.
These guys are different than the pitchers who throw the oddball no-hitter then disappear into obscurity. The Mike Warrens or the Joe Cowleys.
No, ERA winners were better for more than just a day. In fact, they were terrific for a year. But, in may cases, not more than that. Many of the title winners were mediocre before and after their one shining moment.
Here's a look at some of them.
-- Ontiveros. A 2.08 to win the title pitching 115 innings, one inning more than the minimum to qualify in a strike-shortened season. Career record 34-31.
-- Darwin. Got his 2.21 ERA in 168 innings including 17 starts. Career 171-182. No all-star games.
-- Scott Garrelts. 2.28, 193 innings, San Francisco 1989. Career 69-53, one all-star appearance.
-- Allan Anderson. 2.45, 202 innings, Minnesota 1988. Career 49-54. No all-star games.
-- Joe Magrane. 2.18, 165 innings. St. Louis 1988. Career 57-67. No all-star games.
-- Alejandro Pena. 2.48, 199 innings. Los Angeles 1984. Career 56-52, 74 saves. Zero all-star games.
-- Rick Honeycutt. 2.43, 174 innings. Texas 1983. Career 109-143. Two all-star games.
-- Atlee Hammaker. 2.25 in 172 innings. SF 1983. Career 59-67. 1 all-star game.
-- Sammy Stewart. 2.32 in 112 innings. Baltimore 1981. Career 59-48. Zero all-star games.
-- Craig Swan. 2.43 in 207 innings. New York Mets 1978. Career 59-72. Zero all-star games.
-- Capra. 2.28 in 217 innings. Atlanta 974. Career 31-37. One all-star game.
-- Segui. 2.56 in 162 innings. Oakland 1970. Career 92-111. Zero all-star games.
-- Dick Bosman. 2.19 in 193 innings. Washington 1969. Career 82-85. Zero all-star games.
-- Joe Horlen. 2.06 in 258 innings. Chicago White Sox 1967. Career 116-117. One all-star game.
-- Hank Aguirre. 2.21 in 216 innings. Detroit 1962. Career 75-72. One all-star game.

What to take from it?
That these guys won one of baseball's key categories in a given year is something you wouldn't see in another sport. This is like, what, Jay Fielder (Miami Dolphins) leading the NFL in passing. Or Jerry Sloan leading the NBA in rebounding during a year in the 1970s.
Here's what else to notice. Often, the ERA winner didn't surpass the minimum innings requirement by much. Ontiveros, Darwin, Stewart and Segui made it by the skin of their teeth. In this list, only Capra (who never surpassed 162 innings in a year again), Aguirre and Horlen really blew past it.
And back to Peavy. He qualified with 166 innings, crossing the minimum in the final week. Luck, timing and a lack of ton of innings seem to be part of the reason why these guys, without glittering careers, have a piece of the record book