The Dark Angel-sired colt was the 4/1 favourite, and became the joint shortest-priced winner of the Unibet Stewards' Cup (with 2003 winner Patavellian) since 1946.
Khaadem carried 9st 6lb to his two and three-quarter lengths triumph over 14/1 chance Open Wide - the highest weight ever carried to victory in the race by a three-year-old. The previous record belonged to Red Alert, who carried 9st 2lb when winning in 1974, and Matador, who carried the same weight in 1956.
A delighted Hills, for whom this was a third success of the 2019 Qatar Goodwood Festival, said: "I so enjoyed that, everything went perfectly really. Three-year-olds have got a pretty good record in this race recently. I am sure that he could get seven furlongs if we wanted to go that route, but he is the most beautiful-looking horse.
He is growing up with every race that he has and we have to look at a Group race next. He is a class horse and is only going to get better and better, so I think we have to go to the top table with him. I guess we will have to look at the G1 [Sprint Cup] at Haydock. I think this fellow is a very good horse who is only going to get better and better."
'GLORIOUS GOODWOOD' 2019 GALLERY