The Arizona Diamondbacks optioned left-handed pitcher Caleb Smith to Triple-A on Sunday. Right-handed pitcher Matt Peacock was called up in a corresponding move. Smith began the year as a member of the team's starting rotation, but he was shelled in his first outing. Facing the San Diego Padres on April 10, he allowed five runs (four earned) over just one inning. He then allowed another five earned runs over three innings in relief this past Friday. Peacock, meanwhile, made his MLB debut with ...