The NHL has joined other professional leagues in mandating domestic violence, sexual assault and sexual harassment training for all of its players.
The program, developed by the NHL and NHL Players' Association, involves all 30 teams going through hour-long educational sessions with outside professionals. It began last week, and teams will complete the seminar over a two-month span.
The NFL and Major League Baseball instituted similar programs in the aftermath of situations involving football players Ray Rice and Adrian Peterson.
Hockey has had its own high-profile cases.
A former defenseman with the Los Angeles Kings, Slava Voynov, was sentenced to three months in prison when he pleaded no contest to a misdemeanor charge of domestic violence against his wife.