Why didnt the cardinals trade for a relief pitcher?

Question

Why didnt the cardinals trade for a relief pitcher?

Answer 1

most likely cause they didnt find a deal where they felt that what they got was worth more than what they would have to give up to get it

Answer 2

My best guess is that John Mozeliak was too incompetent to even make a simple trade for a relief pitcher. It kind of makes you miss Walt Jocketty, doesn't it? Mulder could be used in relief after he returns in a couple weeks, but even if he somehow stays healthy, he likely won't be very effective.