BBC News: 1,000 Guineas: Frankie Dettori wins race for fourth time on Mother Earth
It is a third straight 1,000 Guineas win for trainer Aiden O'Brien, who previously had success with Hermosa and Love, and becomes the first trainer to achieve the feat since 1918.
Mother Earth was chased home by Saffron Beach and Fev Rover, with 5-2 joint-favourite Santa Barbara fourth. It was also O'Brien's fifth 1,000 Guineas victory in the past six years.
"Come on the oldies," 50-year-old Dettori said, after Kevin Manning, 54, had won the 2,000 Guineas on Poetic Flare on Saturday.