Tsuyoshi Nishioka was not available to play in last night’s (September 12) game against the Yomiuri Giants because of tightness in his back. He was listed as available, but was unable to play. His status moving forward is uncertain.
Source: Sanspo 9/13/2017
[UPDATE 9/13 @ 5:05pm]
Nishioka was taken off the active roster today. He was examined at a hospital after pre-game practices on September 12. He rested at home today.
Source: Nikkan Sports 9/13/2017
[UPDATE 10/9 @ 2:10am]
Nishioka went 3-for-3 in a batting practice scrimmage on October 7. He will get some playing time during the Phoenix League and might be ready to play in the Climax Series that begins on October 14.
Source: Sanspo 10/8/2017