I know baseball managers aren't always the sharpest knives in the drawer, but seriously, if all you've got is "Well, it's a long season" to explain the inexplicable use of a worthless 8th inning pitcher, then it's time to go back to the euphemism bucket.
“We have an eighth-inning guy and stopper who are doing good jobs,” said Roenicke. “We talked with Saito and thought he’d be a sixth- and seventh-inning guy until he gets his feet on the ground, pitching a few times. Then we’ll see where we are.”Oy... Meanwhile the season's clock continues to tick.
So, there's your answer.