Hitoki Iwase was taken off the active roster on April 28 after giving up three runs (two earned) on three hits over a third of an inning of work against Yokohama at Yokohama Stadium on April 27. Iwase approached coaches after the game and asked to be sent down to Ni-gun. Motonobu Tanishige told reporters the veteran made the request because he was unsatisfied with his performance and wanted more time to work on his mechanics. There is no timetable on his return.
Source: Daily Sports 4/29/2016