- Mark Saxon, ESPN Staff Writer
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Bell, originally signed by the Dodgers, has played in 100 major league games over three seasons for the Baltimore Orioles and Arizona Diamondbacks. A career .195 hitter, the 25-year-old has played mostly third base. He and Brendan Harris, who had previously been signed to a minor league deal, will compete for a bench spot.
Demel, 28, is 4-4 with a 4.95 ERA in 72 relief appearances for the Diamondbacks.