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The guy doesn't need to be a fireballer, but then he'd better be a sidearmer or a dead-fisher or have SOME kind of weapon.
When the cupboards were bare there was an excuse for not putting the bazookas out there in the bullpen.
But we should be past the point where we're bringing a paring knife to a gatling-gun fight.
If you feel you have to have an 88 mph groundballer who gives up 10 hits per, then let him throw long relief in blowouts, but please use instruments of death for the important innings, not instruments of aggressive tickling.
~G