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You don't need me to tell you that Jacoby Ellsbury is important to the Red Sox or that the Brewers need Ryan Braun to hit if they're going to have a big October. Every team in the postseason -- and the remaining wannabes -- have guys who don't get quite as much pub as those stars, but who will be critical to their success or failure. Here's an X factor for each of the 10 teams still alive in the races.

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Related Topics: mlb, San Francisco Giants