Yasutaka Tobashira complained of discomfort in his left side after a practice game against Hanshin on February 13. He was examined at a hospital in Ginowan and diagnosed with a strain in his left abdominal oblique muscle. He will report to Ni-gun camp for rehab on February 15. He might require about a month for a full recovery.
[UPDATE 2/16 @ 11:15pm]
Tobashira is hoping to be back at 100% percent in March.
[UPDATE 2/22 @ 11:45pm]
Tobashira is feeling better, but is still being careful because he does not want to re-aggravate the injury.
Source: Sponichi 2/22/2017
[UPDATE 3/17 @ 9:38pm]
Tobashira is scheduled to join the Ichi-gun team on March 18.
Source: Daily Sports 3/17/2017