A trip to Melbourne awaits the talented Kingdoms but trainer John O'Shea admits he will have to behave better than he did after prompting a double protest at Randwick on Saturday.

The four-year-old led all the away to win the Listed City Tattersalls Club Cup but drifted out in the straight causing interference to runner-up Saint Encosta and third-placed Planet Purple.

Stewards firstly dismissed the objection by Kathy O'Hara on Planet Purple against Jay Ford, saying the 1-3/4 length margin was too great. They then said Tim Bell missed just one strike with the whip and the incident was not enough to uphold the protest.

"We see that it was you who was more impeded than the horse," chief steward Ray Murrihy told Bell.

"You miss one strike but continued to ride the horse out."

A gelding operation at the end of his three-year-old season, which included a third to It's A Dundeel in the Australian Derby, has gone some way to curbing Kingdoms' wayward tendencies but O'Shea said he still had more to learn.

"He's on an upward spiral but he still has to do things right," O'Shea said.

"The plan is to take him to Melbourne for the Lexus and if he wins that, he gets into the Melbourne Cup.

"I told Jay not to be frightened if he got posted wide. He is a very good horse but obviously still needs to improve his manners."

Ford said there was no doubt Kingdoms had been difficult to control but he told the protest hearing he was always going to win.

"There is no question he was wayward under pressure and wandered out," he said.

"He has inconvenienced Kathy's mount but he was still going better.

"Tim Bell never ceased riding and they both had the chance to get past me."

The Lexus Stakes (2500m) is the final throw of the dice for horses trying to force a way into the Melbourne Cup with the winner an automatic runner if already nominated.