We find the answer to this question in Ken Macha's forthcoming book, "How to avoid a zim-zam: Managing the Milwaukee Brewers" where he says, "If' you've got a guy who's not quite 100%, but he's a veteran, you play him as much as you can, so that you can stay out of the zim-zam. Remember, it's all about staying out of that zim-zam."