MLB continues to discuss when it will return to the field. International Baseball may have just offered them a lesson in not returning too soon. Nippon Pro baseball in Japan began playing practice games in empty stadiums on March 20 with an opening Day target of April 24th. Within a week, three Hanshin Tigers players tested positive for COVID-19, prompting the team to order players and staff self-quarantine. NPB secretary general Atsushi Ihara told reporters the league would consider changing the scheduled opening day. SI’s senior writer Tom Verducci highlights how the MLB can use the NPB’s ordeal as a lesson not to return too soon.