With Kristian Campbell in the majors with Red Sox and signed to a long-term contract extension, Marcelo Mayer and Roman Anthony step to the plate as the top prospects.

The Boston Red Sox believe they got a good one in their trade with the Milwaukee Brewers on Monday. It was clear that the Brewers were desperate for starting pitching, with all but one of their Opening Day rotation arms already on the injured list.

Kristian Campbell, Marcelo Mayer and Roman Anthony could soon be fixtures in Boston's lineup -- and the test case for a groundbreaking approach at the plate.