The Yomiuri Giants announced on January 29 that Shun Yamaguchi will start the year at San-gun spring camp instead of Ni-gun spring camp out of concern for his right shoulder. Yamaguchi had problems with the shoulder last season and has been careful with it during the off-season.
[UPDATE 4/21 @ 6:01pm]
Yamaguchi hopes he will be ready to pitch in a rehab game at some point before the end of the month. He has been tossing bullpen sessions without any shoulder problems.
Source: Sanspo 4/21/2017