Derek Richard Dietrich is an American professional baseball second baseman and outfielder who is a free agent. He has played in Major League Baseball (MLB) for the Miami Marlins, Cincinnati Reds and Texas Rangers. Prior to playing professionally, Dietrich starred at St. Ignatius High School in Cleveland, Ohio and played for the Georgia Tech Yellow Jackets. While primarily a second baseman, he has also played left field and third base during his career.

The Wareham Gatemen are a collegiate summer baseball team based in Wareham, Massachusetts. The team is a member of the Cape Cod Baseball League (CCBL) and plays in the league's West Division. The Gatemen play their home games at Clem Spillane Field in Wareham.