A Rule 5 acquisition by Houston in 2012 , he 's been a mainstay of the Astros bullpen ever since .
Fields was part of the deal that sent Bedard out of town , moving to the Red Sox in 2011 .
A Rule 5 acquisition by Houston in 2012 , Bedard 's been a mainstay of the Astros bullpen ever since .
Fields was part of the deal that sent Bedard out of town , moving to the Red Sox in 2011 .