Muhaarar shook up the Qipco 2000 Guineas picture after pulling off a surprise victory in the Aon Greenham Stakes at Newbury.
In a race which could easily have been passed off as a Group One contest such was the quality of the field, the 16-1 winner showed he was not there to make up the numbers when continuing the purple patch of Frankie Dettori.
The Richard Hannon-trained Estidhkaar, a stablemate of favourite Ivawood, cut out the pace up front alongside Toolcoolforschool early on in the seven-furlong event before, being sent on by Paul Hanagan approaching the final two furlongs. It looked as though the move was a decisive one, but Dettori had other plans, ranging the son of Oasis Dream alongside the Champagne Stakes and Superlative Stakes victor inside the furlong marker.
Withstanding a late fightback from Estidkhaar, the Charlie Hills-trained runner stayed on for a neck success, in a course-record time of 1 minute, 20.80 seconds, with Ivawood back in third.
Hills said: “I think the horse has grown up mentally and is so much more relaxed than last year, and that will stand him in good stead for the future.”