Mars fared best of the Aidan O'Brien challenge .
More attention will fall on the extremely disappointing performance of Irish 2,000 Guineas winner and second favourite Magician , who finished last having never got into contention at any stage .
Mars fared best of the Aidan O'Brien challenge but more attention will fall on the extremely disappointing performance of Irish 2,000 Guineas winner and second favourite Magician , who finished last having never got into contention at any stage .