The Chunichi Dragons announced today that Ryosuke Oguma was examined at a hospital in Nagoya and diagnosed with a right rotator cuff injury. He will not be able to play catch for about two to three weeks.
Source: Daily Sports 4/20/2013
Yusuke Matsui was taken off the active roster today with a bruise on his left oblique. It will likely take three to four weeks for the pain to go away.
Source: Nikkan Sports 4/20/2013