Australia got off the mark at the second attempt with victory in the Darley European Breeders Fund Maiden at the Curragh.
Second first time out after missing the break and losing lengths at the start, Aidan O'Brien's beautifully-bred Galileo son of Ouija Board had flown home to just get touched off.
Again a little tardy from the gates, he was moved up by Joseph O'Brien to track the front-running Billboard.
Asked to quicken over two furlongs out, the 3-10 favourite looked like going easily clear but in the end was driven out to beat Dermot Weld's newcomer Carla Bianca by three-quarters of a length.
The winning trainer said: "He is still very babyish. He was slow away again and he seems to go asleep in the stalls.
"We will take our time with him. He could be anything as the penny hasn't really dropped with him yet. He has a lot of talent."
Wilshire Boulevard outpointed better-fancied stablemate Oklahoma City to give O'Brien a one-two in the Jebel Ali Racecourse & Stables Anglesey Stakes.
Oklahoma City was sent off the evens favourite having won a Naas maiden by 13 lengths last time, and Joseph O'Brien soon had him in the lead on the stands rail.
He ran on strongly, but was no match for Wilshire Boulevard (7-1), who seemed to relish the step back up to six furlongs as he challenged a furlong and a half out under Seamie Heffernan and scored by three-quarters of a length.
O'Brien said: "We left the hood off today and he settled well. He's a brother to Zoffany and like a lot of the Holy Roman Emperor's (sire) he seems to be improving."
O'Brien added of the runner-up: "I was happy with the run and he will probably step up to seven furlongs now."