Mark Trumbo is coming back to the American League West.
Sources: Deal is Trumbo, Nuno from #DBacks to #Mariners for Castillo, Leone and two prospects.
— Ken Rosenthal (@Ken_Rosenthal) June 3, 2015
The prospects were shortly revealed after as infielder Jack Reinheimer and outfielder Gabriel Guerrero.
The Major Leaguers are journeyman backup batcher Wellington Castillo and 23-year old reliever Dominic Leone. Seattle also received fringe staring pitcher Vidal Nuno.