According to the Lansing State Journal, this is the year of the Detroit Tiger cap.  Now comes the "Magnum, P.I." reboot.  In the opener, Magnum wears his Tiger cap, then gives it to a boy he's comforting.

In the original "Magnum" series, Tom Selleck wore the cap because he's a fan.  He was born in Detroit, moved to California when he was young, but shared his dad's passion for the team.

When Selleck was a baby, the Tigers won the World Series; when he was 7, they lost 104 games.  But they won the series again when he was an unemployed actor at 23, and when "Magnum" was in the middle of its eight-year run.  Maybe they will again, if this new version of "Magnum P.I." lasts long enough.