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This is my attempt to give a thumbnail sketch of a relievers usage in a bull pen (Tigers edition)....

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This is my attempt to give a thumbnail sketch of a relievers usage in a bull pen (Tigers edition). X-axis is xFIP, y-axis is total batters faced and the size of the bubble is dictated by the average leverage index of when each reliever enters the game. Jeff Zimmerman had made some graphs this time last year on this, in a it different way. So, besides the fact that I need to make the bubbles all one color, is there anything you'd do differently? Should I make the bubbles size based on TBF and not gmLI?

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