According to Sports Hochi, Seth Greisinger will not be ready for the start of the regular season.
Greisinger has been bothered by right shoulder problems since last year. He went through rehab during the winter and returned to Japan with hopes to improve his condition during Ni-gun camp. But his shoulder condition worsened and he has since been shut down (no throwing, no playing catch).
The team does not have a timetable on Greisinger, but even if he begins to improve now, he most likely will not be ready until some time in or after May.
Soure: Sports Hochi 3/1/2014