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They'd see risky, bargain basement veterans as risk hedges for the kids. IOW, the kids only get to play en masse if the fogeys all break, and in the meantime, you have a higher stoploss.
But either way you want to look at it...there's no reason the Mariners should be worried about Marcum's health...we have BEAVAN...I don't like him as a front line option but as a stoploss....he's fine.