Getty The Boston Red Sox boast a farm system that is the envy of most MLB teams , due primarily to the top-end talent among its position players.   With a trio of budding superstars in outfielder Roman Anthony , second baseman Kristian Campbell , and shortstop Marcelo Mayer – who are ranked in the top 12 among all prospects and ready to join other recent graduates of the system at Fenway Park such as outfielder Ceddanne Rafaela and first baseman Triston Casas – Boston is on its way toward