After securing a narrow, front-running victory in the Mucho Macho Man Stakes Jan. 4, 'TDN Rising Star' Guns Loaded (Gun Runner) will be the one to catch while making his two-turn debut in Saturday's GIII Holy Bull Stakes at Gulfstream Park. The 1 1/16-mile Holy Bull attracted a talented field of seven, including 9-5 morning-line favorite 'Rising Star' Ferocious (Flatter), a last-out fifth with trouble in the GI Breeders' Cup Juvenile; and the Brad Cox-trained Tappan Street (Into Mischief), a promising debut winner going seven furlongs at Gulfstream Dec. 28....