Aidan O'Brien completed his third Guineas double as Winter claimed victory in the 1,000 Guineas at Newmarket on Sunday.
Having triumphed in Saturday's 2,000 Guineas with Churchill, O'Brien made it a winning weekend as Wayne Lordan rode Winter to glory.
The achievement matches O'Brien's exploits from 2005 and 2012, when Footstepsinthesand and Virginia Waters, and then Camelot and Homecoming Queen, completed weekend lockouts for the Irish trainer.
Pre-race favourite Rhododendron - another of O'Brien's horses - settled into the middle of the pack early on, as Hydrangea - O'Brien's third representative in the race - hit the front.
Frankie Dettori mount Daban followed Winter as the 9/1 shot showed her hand, with Rhododendron - ridden by 2,000 Guineas winner Ryan Moore - slow to react to her stablemate's burst.
Moore had been looking for a third consecutive win in this race but was ultimately made to settle for second, with Daban reaching the finishing post in third.
The daughters of legendary racehorse Frankel, Fair Eva and Queen Kindly, finished fifth and ninth respectively.