With regular partner Joseph O'Brien unable to make the 123-pound weight allocated to Camelot (GB) (Montjeu {Ire}) in Sunday's G1 Prix de l'Arc de Triomphe, Frankie Dettori will take his 25th consecutive ride in Europe's end-of-season championship aboard the G1 2000 Guineas, G1 Epsom Derby and G1 Irish Derby hero, trainer Aidan O'Brien confirmed via Twitter Wednesday. O'Brien junior will instead ride St Nicholas Abbey (Ire) (Montjeu {Ire}), who is set to carry 131 pounds in the €4-million event. “It's a shame Godolphin don't have a horse in the race, but I'm really and looking forward to it,” said Dettori. “I was standing by for Snow Fairy as Ryan [Moore] seemed set to ride Sea Moon, and what has happened in the last two or three days has been unbelievable. Snow Fairy was injured, Nathaniel is out and Joseph can't do the weight on Camelot so the ride became available. It's an honor for me to ride the horse. Let's hope he's in tip-top shape as he's had a pretty long season, but if the Camelot we know turns up he should have a very good chance. I think you want to judge the horse more on the Guineas and Derby runs. In the Leger he was ridden to stay and it was a stop-start kind of pace early on and I still think he quickened really well in the end. He's better judged on his two previous wins which were pretty impressive. The horse looks to be tremendously well balanced, he came home on his own in the Derby. He spreadeagled the field and looked mightily impressive. Coming back to a mile-and-a-half at Longchamp will be his absolute cup of tea. It looks like there's going to be two or three pacemakers, the race will be run at a very high tempo and, if that is the case, it doesn't really matter where I sit. I haven't spoken to Aidan yet, a low draw is key, but we're not going to change his pattern of racing. I'm sure Aidan will come out with a plan and we'll hope for the best on Sunday.” Following the enforced absence of Nathaniel (Ire) (Galileo {Ire}), Ballydoyle's Imperial Monarch (Ire) (Galileo {Ire}), who may instead point to the GI Canadian International at Woodbine, was the only other withdrawal as the field was reduced to 16 in advance of Thursday's €100,000 supplementary stage. Possible additions to Sunday's line-up include the G1 Prix du Jockey-Club winner Saonois (Fr) (Chichicastenango {Fr}), Lady Rothschild's G1 Irish Oaks heroine Great Heavens (GB) (Galileo {Ire}) and His Highness The Aga Khan's GI Secretariat S. victor Bayrir (Fr) (Medicean {GB}).