Bay City Roller is out of Bloomfield (Teofilo), a multiple stakes winner in Ireland whose wins include the Listed Vintage Tipple and the Listed Noblesse, from 1m4f to 1m6f, and who was twice placed at Group 3 level. She is also the dam of her only other winner so far, the triple winner Botanical (Lope De Vega), twice Listed-placed, including third in the Listed Doncaster Mile Stakes. The family also includes Auguste Rodin (Deep Impact), winner of the Gr.1 Derby, a grandson of Halfway To Heaven. Bloomfield has an unraced three-year-old filly, Blooming Rose (Blue Point), and a two-year-old colt, Rogue River (Blue Point).