Former Sydney sprinter Not Listenin'tome has won the first Group race of the Hong Kong season, taking out the National Day Cup at Sha Tin.

Not Listenin'tome accounted for several of Hong Kong's best straight track runners to win Thursday's 1000m sprint by two lengths over Super Jockey.

Formerly trained by the Hawkes team and then Gary Moore, the five-year-old is now in the care of leading Hong Kong trainer John Moore.

"I'm absolutely gobsmacked he's finally done what I wanted him to do," Moore told the HK Jockey Club.

"This should take him on his way to become Hong Kong's top sprinter.

Moore said the International Sprint in December was a target.

"I don't see any reason why this horse can't lead Hong Kong's charge with regard to the upcoming international targets," he said.

"Of course, there's a lot of water to go under the bridge yet. We've got two runs to come before the big race, one on the 25th (HKG2 Premier Bowl) and then the (G2) Jockey Club Sprint in November, but it's looking good."

Not Listenin'tome was Group One placed as a three-year-old when second to Zoustar in the 2013 Coolmore Stud Stakes.