The pair interestingly met on their respective debuts in what must be one of the hottest juvenile maidens of all time back in August 2010, with Frankel coming out on top by half a length.
Frankel is now the world’s highest-rated racehorse and unbeaten in 11 appearances, while Nathaniel too has gone on to great things, winning last year’s King George VI And Queen Elizabeth Stakes at Ascot and this season’s Eclipse.
He was beaten just a nose by German raider Danedream when defending his King George crown last weekend and connections are now pondering the next move, with a trip to the Knavesmire a real possibility.
Owner Lady Rothschild said: “In a way it would never be me who decides, it would always be the trainer.
“I’d hate to be the one that beat Frankel. I wouldn’t like to be the one to lower his colours, but I wouldn’t be against running against him if the trainer wanted to.”
Rothschild is enjoying a fantastic Flat season, with Nathaniel’s full-sister Great Heavens also making her mark at the top level when landing last weekend’s Irish Oaks at the Curragh.
“Nathaniel is getting better, and bigger and stronger, but I think Great Heavens might be the best one of all,” she said.
“I was overcome when she won in Ireland. I adore her.”
Asked if Great Heavens would run in the St Leger, she said: “I’m afraid I really don’t know.”
Meanwhile Born To Sea is likely to have his first run over a mile and a quarter in the Keeneland Royal Whip Stakes at the Curragh on August 12.
The half-brother to Sea The Stars, the champion three-year-old of 2009, has yet to hit those kind of heights but he has taken on the best this year.
After being unplaced in both the English and Irish 2000 Guineas, he stuck to a mile for the St James’s Palace Stakes at Royal Ascot and was fourth to Most Improved before stepping straight up to a mile and a half for the Irish Derby.
He put up probably his best performance in the Curragh Classic to take second place, two lengths behind Camelot.
“The Royal Whip is where we intend to go. He’s bouncing out of his races. He’s got a bit of his brother’s (Sea The Stars) constitution, the way he takes his racing really well,” trainer John Oxx told At The Races.
“He eats up and is always the same from day to day. He’s improving from race to race also.
“We’d like to give him another race to see how he’s going and this will be his first race at a mile and a quarter, which might be his best trip.”
* Moonstone Magic will not run again this year after fracturing her pelvis. Ralph Beckett’s filly won the Fred Darling at Newbury in April but has been off the track since finishing a well-beaten 15th in the 1000 Guineas at Newmarket in May.