They bet her like she would dominate, and so she did. With an electric turn of foot, Nitrogen (Medaglia d'Oro--Tiffany Case, by Uncle Mo) rolled past her rivals in the lane and scored an emphatic victory in the GII Edgewood Stakes at Churchill Downs to kick off the graded action on Kentucky Oaks day. Coming into this contest on a three-race win streak which began when she broke her maiden Jan. 4 in the Listed Ginger Brew Stakes at Gulfstream Park, Nitrogen has also been the betting choice for all...