PHOENIX — In a money-saving move, the Arizona Diamondbacks have traded Bronson Arroyo and last year’s first-round draft pick Touki Toussaint to the Atlanta Braves for infielder Phil Gosselin. The 38-year-old Arroyo has not pitched since undergoing Tommy John surgery last July 18. He signed with Arizona as a free agent before last season after eight years with the Cincinnati Reds.