Martin Harley's persistence paid off as Seismos ground down his rivals in the last stride to win the Geoffrey Freer Stakes.
The Marco Botti-trained 11/1 chance kept on under pressure to wear down Willing Foe in the closing stages and take the Group Three honours by a neck.
It was a race in which the picture changed dramatically several times in the final two furlongs, but Harley's never-say-die ride ultimately prevailed.
Seal Of Approval came with a wet seal from last place to deny Red Cadeaux for third on the line, a length behind the two principals.
Harley, who was given a four-day whip ban (August 30-September 2) afterwards, said: "He travelled well and they went a good gallop. He stuck to his guns well."
With Botti in Chicago saddling runners at the valuable Arlington Million meeting, it was left to his assistant Mario Baratti to add: "He's a strong horse, a fighter and he needs them to go a good pace. He had good form in Germany and he's stayed well."
However it was fourth-home Red Cadeaux, twice runner-up in the Melbourne Cup, who received as much attention as the winner.
Trainer Ed Dunlop had brought Gerald Mosse across to be back on Red Cadeaux after they finished second together Down Under last year.
The chestnut had returned very sore from a subsequent outing in Japan, but had every chance here before tiring late on.
"He's a very hard horse to assess as he doesn't work very well at home any more, but I wanted to see him run well and he has done it again," the trainer said.
"He's still a legend. As long as Ronnie Arculli (owner) is happy, Australia's the plan and I would like to give him one more run before that. He's in the Irish Leger, the Grand Prix de Deauville, a Group One in Germany or he could go back to Australia early."