John and Thady Gosden have shaken up the Qatar Prix du Jockey Club by supplementing Craven Stakes winner Oxagon at a cost of €72,000 on Wednesday morning.Owned by owner-breeder Prince Faisal, whose Mishriff won the race for the Gosden team in 2020, Oxagon was last seen finishing sixth in the 2,000 Guineas at Newmarket.Only the Aidan O'Brien-trained Flushing Meadows defected from Sunday's race at the forfeit stage on Wednesday. His Ballydoyle-trained stablemate Constitution River, who also has the option of going to Epsom, for which he is as short as 3-1 for Derby glory, has been left in the French Classic. The post John and Thady Gosden Supplement Oxagon For The French Derby appeared first on TDN | Thoroughbred Daily News | Horse Racing News, Results and Video | Thoroughbred Breeding and Auctions.