The John Size-trained Big Bang Bong has blossomed this season with some time and he gets another great chance to add to his record in a thin Volunteers Challenge Cup (1,650m) at Happy Valley on Wednesday night.

His supporters might get a better price too with Joao Moreira abandoning Big Bang Bong (Brett Prebble) in favour of Victory Machine for John Moore.

Big Bang Bong was something of a disappointment when he went around well fancied in a couple of races last season but he needed more time to acclimatise and the four-year-old hasn’t done much wrong since returning from his summer break.

His last four starts have brought up two wins, over this course in December and then at Sha Tin over 1,400m before his latest fourth to Nitro Express and rival Bullish Smart (Silvestre de Sousa) on January 25.

That race was nothing special on face value but it was solidly run and looked sound enough and that makes it the best form in tonight’s trophy event, which looks to have a very long tail.

Two runners are coming off long breaks, there are concerns with the form around one or two others and the race looks a moderately run affair likely to advantage horses racing on the speed, so Big Bang Bong and Bullish Smart will be well suited by that style of race.

They shouldn’t be too far apart in running and Big Bang Bong meets Bullish Smart a couple of pounds better for finishing just behind him last time, which might give him an edge.

Their dangers look to be World Record (Chad Schofield) and Victory Machine and that looks the race.

World Record is in the best form of his brief career after two wins and a second at Sha Tin in Class Four. He looks up to the rise in grade and his first attempt at the extended mile distance but both of those factors do weigh slightly against him.