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5 outs, not chances, for the MI's. Leading to a somewhat unknown number of chances.
How many 'marginal' chances a CF-SS-2B gets is the $64,000 question. How many opportunities does a J.J. Hardy get to snag a ball that would have scooted by Ronnie Cedeno?
Your back-of-the-envelope going off of the .300 BIP makes sense, of course, but it's still difficult to tell how many balls that fall in that little geometrical ray of territory created by two extra strides...
At any rate, there have got to be a lot more balls falling in the "marginal" CF, SS, and 2B areas, simply because the entire sectors are so much more heavily trafficked...