Toshiya Sugiuchi joined the Ichi-gun team on February 13. He started the year at Ni-gun camp since he is still making his way back from the hip surgery he had in October 2015.
Source: Daily Sports 2/13/2017
[UPDATE 5/20 @ 4:35pm and 11:48pm]
Sugiuchi was scratched from a Ni-gun start against Yokohama at Giants Stadium on May 19 because he was not ready to pitch. He had been working toward the start since his last Ni-gun outing on April 10 against Rakuten. Instead of the start, he joined San-gun workouts on May 19. He will remain at San-gun until he is ready to pitch.