Dean Green did not participate in Urasoe camp practices on February 14 because of tightness in his lower body.
Source: Sanspo 2/15/2017
[UPDATE 2/20 @ 11:51pm]
Green was practicing under a separate schedule during the third block of camp (February 11-14) because of pain in his right knee. He told reporters on February 19 that the knee was feeling fine.
Source: Sanspo 2/20/2017