The relationship between Don Mattingly and Buck Showalter goes back more than 40 years.

But this week might mark the last time they see each other in dual pursuit of the World Series ring that has thus far eluded both baseball lifers.

Mattingly will embark on his final full week as the manager of the Miami Marlins Tuesday night, when his team visits the New York Mets in the opener of a two-game series between the National League East rivals.