The Arizona Diamondbacks have signed left-hander Mike Hampton to a minor league contract. Diamondbacks general manager Jerry DiPoto says Saturday Hampton will be used as a reliever even though he has spent much of his career as a starter. The oft-injured 38-year-old will be assigned to Triple-A Reno. Hampton went 7-10 with a 5.30 ERA for the Houston Astros last year before having shoulder surgery.

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