While Dempster struggled at times on the field last year, he kept the clubhouse loose.
"His comedic value will be sorely missed," Miller said.
Dempster pitched just one inning in the World Series, a scoreless ninth in Boston's 8-1 win over St. Louis in Game 1. He ended it by striking out Matt Adams.
"If this is the end, then this is the end, and what a great way to go out," Dempster said.
Notes: The Red Sox signed right-hander Francisco Cordero to a minor-league contract with an invitation to the major-league camp. A closer for most of his career, he didn't pitch last year after struggling in 2012. In 14 seasons with six teams, he is 47-53 with a 3.38 ERA and 329 saves. ... Miller and the Red Sox agreed to a one-year contract worth $1,903,125, avoiding arbitration. Miller had asked for $2.15 million and had been offered $1.55 million. He made $1,475,000 last year. Boston has no remaining players in arbitration.
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