Boston starter Daisuke Matsuzaka has been placed on the 15-day disabled list, according to an Associated Press report. The Red Sox made the move Sunday, citing a minor right shoulder strain. It came one day after the right-hander had an MRI and two days after he gave up six runs in four innings, raising his ERA to 8.23 and lowering his record to 1-5. Opponents are batting .378 against him.