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When George W. Bush walked to the mound for the World Series opener, most viewers saw only a former president reliving a famous ritual. What they missed was the stiffness in his stride, the guarded way he moved his shoulders, the subtle calculation of a man testing the limits of a surgically repaired back. Months earlier, he had undergone fusion surgery on his lower spine, the kind of operation that changes the way you stand, sit, and sleep—let alone throw from a major-league mound.
