However, even Yandina Creek conditioner Elson has harboured doubts over his chaser, who has 11 triumphs from 35 career starts.
“I’ve knocked this dog every start. I don’t mean every start, but I didn’t think he could win the Straight series and he won it,” he said.
“And, then he was in the 457 metre series and I didn’t think he was strong enough, but he won that. He held on.
“I didn’t give him much chance last week and he ran the faster of the two and he ran super in 29.83 seconds.”
Weighing 31.5kg, Scrub’s Blue has a big heart to go with his strong frame.
“He just doesn’t seem to give up. He’s the more honest of the two, to give you that super run every week,” Elson said.