Paddington’s rate of improvement compares to nothing Aidan O’Brien has seen before as his three-time Group One scorer attempts to keep his winning streak going in the Qatar Sussex Stakes.

The son of Siyouni has won six races on the bounce and having started the season winning a heavy ground Naas handicap has progressed to become one of the standout three-year-olds of the season.

Having landed the Irish 2,000 Guineas in May, he quickly asserted himself as the leading miler of the Classic crop when taking the St James’s Palace Stakes at Royal Ascot, before stepping up in trip to down Emily Upjohn in a thrilling renewal of the Eclipse.

Now the outstanding Ballydoyle colt returns to the eight furlongs over which he made his name at the Qatar Goodwood Festival and O’Brien believes his rise to the top has no equal during his long and distinguished training career.

He said: “What he has done has been incredible. He’s gone from strength to strength with every run and it is very unusual.

“I know Ryan (Moore) is very impressed with him all the time and he looks a very serious horse at the moment. I think he’s standing up to a lot of scrutiny by the other horses that have gone by before him.

“It’s very unusual what he is doing and the ease with which he is doing it and the way he is doing it.

“It’s very hard to compare him but I’m not sure we’ve ever had a horse that has made that improvement in the way he is doing it, mentally, physically and confidence-wise and everything really. He just looks so natural.”

Having seen off Emily Upjohn over 10 furlongs at Sandown, Paddington could have another John and Thady Gosden-trained star filly to tackle on the Sussex Downs in the form of Inspiral, who the bookmakers feel has the best chance of knocking Paddington off track.

It will be the first time he will have faced older horses over a mile, but the master of Ballydoyle is eager to see a competitive contest so he can get a true feel for Paddington’s potential accomplishments.

“We always treat every horse with total respect, but we’re also delighted when the races are as competitive as they can be because that is what we all want to see,” said O’Brien.

“That is what we need to gauge our horses and know where we are going next.

“The more competitive it is and the better the horses are that are in there, the better it is for us and everyone else, we think.”