The Chiba Lotte Marines announced today that Tanner Scheppers will return to the United States to be with his expecting wife. He will leave the team on February 5 and is slated to return on February 12.
Source: Daily Sports 2/4/2018
[UPDATE 2/13 @ 3:52pm]
Scheppers rejoined the team on February 13. His wife gave birth to their second child, a boy weighing 3,714 grams, on February 7.