In its current form, the John Size yard is always tough to go past for horses to follow and royally bred three-year-old Infinity Endeavour joins the black book after his promising return from a break on Sunday.

Infinity Endeavour was on our 10 to follow list at the start of this season following some good barrier trial form in Sydney but, after a very nice local debut in early January, he was scratched with a blood abnormality a few weeks later.

A blood abnormality is a cover all expression which can mean all kinds of things in reality but it was enough for Size to put him aside for a couple of weeks at that stage.

Another three months passed before Infinity Endeavour went back to the races, so Size has really taken his time, giving him four trials along the way before the gelding went down by a neck to Sight Leader.

By Fastnet Rock, Infinity Endeavour is out of the Group One class mare Black Mamba, who came from the United States one year for the Hong Kong Vase, so he is bred for longer than the 1,200m on the weekend.

As a three-year-old, his best is certainly ahead and probably when Size gets him out to a mile or further so perhaps, long term, there will be some aspirational thoughts for the gelding.

But, for the immediate future, he has enough talent to start winning soon and you know he’ll be well placed.

Our other black booker comes from the same race in the Danny Shum Chap-shing-trained Autopay. He doesn’t come with quite the same optimism to his prospects as Infinity Endeavour but he finished off well into seventh at his second run back from a break.

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It wasn’t a race where the tempo helped run-ons so taking the ground off the leaders that he did was a good effort from the lightly raced son of Darci Brahma.

He won’t want to bump into anything especially talented but Autopay does look capable of breaking through in the bottom half of Class Four in the very near future.