U.S. District Judge, District of Minnesota
Nelson is presiding over a multidistrict class-action lawsuit brought against the NHL by more than 150 former players who allege that the league mishandled their concussions and safety — claims that the league firmly denies. The case is somewhat similar to the concussion case brought against the NFL that resulted in a settlement valued at more than a billion dollars. While no trial date has been set, Nelson, who ruled in favor of NFL players in ending the 2011 lockout, reportedly wants a trial to begin this year.