The Indians were in the market for help in center field, so they add Martin here as a short-term solution. Cleveland still likes Bradley Zimmer as their center-fielder of the future, but Martin will help down the stretch as the likely stronger half of a platoon with veteran Rajai Davis. Dowdy is another bullpen arm for organizational depth purposes.

In Castro, the Tigers land a very young shortstop prospect who might be the heir apparent to Jose Iglesias (if he can put it all together). He has all the tools for success, including switch-hitting ability, a burgeoning frame and stolen-base speed. Castro is also solid enough defensively to remain at short throughout his development.

Martin's value should receive a small spike but he is more likely to sit against left-handed pitching now that he is in Cleveland. Castro should squarely be on the fantasy radar now, while Dowdy is bullpen fodder. Detroit's new center-fielder figures to be JaCoby Jones or Mikie Mahtook. Neither player offers significant fantasy value.