"They had these races in mind and they approached me to ride the horse."
Purton said he was impressed with how the 7-year-old handled himself during the hit-out.
"He was a little bit fresh and up on the bridle and went a little bit stronger than I would have liked for a stayer through his work.
"But when he came into the straight I gave him his head and he quickened up quite nicely and ran right through the line.
"He had a good blow pulling up but he's in pretty good order."
Purton isn't concerned about Admire Rakti having his first Australian start at Caulfield, rather than Flemington in the Melbourne Cup, and believes whatever the gelding does on Saturday he will improve on.
"I think he's got the speed to run well around Caulfield," Purton said.
"The way he worked he still feels like he's got the speed in his legs and he did run fourth in a Japan Cup at this trip.
"I don't think it's going to be a problem, but they all seem to think he's going to be better second-up than what he is first-up as he takes a run to blow the cobwebs out.
"I've got to respect their thoughts on how the horse goes and competes, but I think he's sharp enough to run well first time out."
Fellow Japanese visitor Bande headed to Caulfield on Saturday morning where he walked and cantered and got a good look at the surroundings with connections reporting all was well with the stayer.
In other Australian news, Waikato apprentice Bridget Grylls has celebrated her decision to transfer full time to Brisbane by outriding her 3kg allowance.
The 21-year-old has ridden more than 100 winners since swapping her university books for a saddle just over two years ago. Since coming to Brisbane in July on loan to trainer Barry Lockwood at Eagle Farm, she has swept all before her.
Grylls' double on Coworth Park and Amizade at Doomben on Saturday took her to 11 wins and third place on the Brisbane jockeys' premiership.
- AAP