Harry Herbert, Racing Manager to owners Highclere Thoroughbred Racing, showed signs of relief after the jockey for Harbinger in the King George VI And Queen Elizabeth Stakes was confirmed to be Oliver Peslier.
Speculation has been rife about who would ride the Hardwicke Stakes champ, with Frankie Dettori, Kieren Fallon and Paul Hanagan as possible contenders thought to be in the running.
However, as trainer Sir Michael Stoute's stable jockey Ryan Moore has opted to stick with Derby winner Workforce in the Ascot event, Stoute and Herbert proceeded to book the Frenchman.
"It's a great relief to have it sorted and to have someone as experienced and as brilliant as Olivier is fantastic," said Herbert.
"These things, from past experience, always take some time to unfold because of jockeys' other plans and horses running and not running and loyalty to other owners and such like.
"We are delighted to get Olivier, his record speaks for itself. He's a wonderful big-race jockey and he rides Ascot brilliantly.
"He's had big wins there recently on Ouija Board and Vision D'Etat and he actually won for us there a while ago on Delilah in the Princess Royal (1997) when he rode a brilliant race.
"With a race as important as this, you really need someone with a very cool head, great experience and riding at the top of their game and he certainly ticks all those boxes."
In a bid to familiarise himself with the four-year-old, who is unbeaten in Pattern company this season, Peslier will fly over to Newmarket at the weekend to take part in a gallop.
"Sir Michael told me last night that he will be over to ride him on Saturday morning in a piece of work to just get acquainted with the horse," Herbert added.
"Harbinger is pretty straightforward but nonetheless I think it is very important that it happens.
"Fingers crossed everything goes smoothly between now and July 24."
After Stoute got the first three home, with Conduit, Tartan Bearer and Ask, in the last year's Group One heat, there is still the chance the past could echo itself as Spanish Moon could also start this time.