Red Sox pitcher Curt Schilling says he's retiring from baseball. The 42-year-old right-hander who won World Series championships with Arizona and Boston announced on his blog today that he's leaving after 23 years with "zero regrets." Schilling missed all of last season with a shoulder injury. For his career, he has the 14th-most strikeouts in baseball history. He leaves with a 216-146 record and 3.46 earned-run average.