The Dodgers have signed pitcher Joe Blanton, bringing back the 35-year-old as a long reliever -- a role he thrived in last year -- on a one-year, $4 million contract.Blanton briefly retired in 2014 when he flamed out as a starting pitcher for the Oakland A's Triple-A affiliate. In 2013, his last full season as a starting pitcher, Blanton went 2-14 with a 6.