Neil Callan kicked in the door on the upper echelon of jockeys last season and he expects John Moore's Not Listenin'tome to do much the same in the sprint division with a big performance in tomorrow's Premier Bowl.

With the return of Group One winners Aerovelocity and Gold-Fun, the Group Two at Sha Tin is the first time this season all of the top-ranked sprinters have met.

Throw in the intriguing presence of champion miler Able Friend coming back in distance and it makes for what should be a revealing test of international day credentials.

Callan says it is a perfect opportunity for Not Listenin'tome to fulfil his potential and mark himself as a Longines Hong Kong Sprint contender in a category the Irish jockey claims lacks a superstar.

"You've got Aerovelocity and Peniaphobia and others who are proven at Group One level, but there isn't a Silent Witness or Sacred Kingdom, so there is an opening to take that crown," Callan said. "These races leading up to international day in December are trials in a sense, but they are also a chance for a horse, if he is building a big reputation like this one, to go out and prove himself."

Not Listenin'tome looked a star in the making as a three-year-old in Australia, but lost form as a serious throat infection put his career in jeopardy. Last season the well-built son of Dylan Thomas showed glimpses of rekindling that earlier spark, and a dominant first-up win over 1,000m in the National Day Cup was another step towards meeting his potential.

Now, a step up to what is seen as a more favourable 1,200m in a contest where he gets weight off the more established top rung has Callan bullish about Moore's charge taking another step up the ladder.

"He has come out and won first-up and was very impressive in that he only did what we asked him to do. Now he has to step up again, but he gives me the impression he can and that the best is to come. I didn't have too much to do with him last season, but from the outside looking in, it seemed like he had all the potential in the world and could become one of the top sprinters here."

Drawing barrier 10 was a blow for the five-year-old, with Aerovelocity and Able Friend also drawing wide in nine and 14 respectively.

Veterans Gold-Fun and Lucky Nine fared better with gates two and three, but Gold-Fun's trainer Richard Gibson is managing expectations with a six-year-old who underwent arthroscopic surgery over the summer.

"He had a little chip taken out of his ankle in the off season, but he has recovered well - the vet Paul Robinson has done a fantastic job of bringing him back in good condition," Gibson said, although the trainer was still pushing punters towards Dundonnell, drawn 11, as the stable elect for the Group Two.

"He is probably a more attractive proposition in this race. He continued to improve throughout last season and eventually won a Group Two over this course and distance, beating Gold-Fun and a lot of the horses he faces here. I would have preferred to run him over 1,200m first-up, but the programme didn't allow it and now we are back to his best trip.

"I think he still has some upside and gets in here with an attractive rating and carrying just 121 pounds."