Time passes quickly for a racehorse and Hong Kong's leading defenders for the Audemars Piguet QEII Cup and Champions Mile on Sunday will have much in common with the ageing gunslinger. Viva Pataca and Good Ba Ba have been the fastest guns in their specialities but, as seven-year-olds, they each await the inevitable emergence of the young talent who will shoot them down. Trainer John Moore has conceded that this year is probably the last that anyone can expect Viva Pataca to hold the world-class level he has graced since 2006, yet the gelding still has a point to make in the QEII Cup. Viva Pataca has been one of the greats of Hong Kong, winning six Group Ones, but luck has all but deserted him at the international level. A hollow victory in the 2007 QEII Cup aside, Viva Pataca has had six international runs without winning but was only once further back than fourth and can lay legitimate claim to being unlucky several times. Moore has maintained that Viva Pataca has not received adequate respect, and his lack of international success has probably been the cause. In winning a second successive Hong Kong Gold Cup in February, Viva Pataca reasserted himself as the domestic middle distance champ, but to some the victory asked as many questions as it answered. The margin was not comfortable and the opposition in the QEII Cup will be deeper. Moore was not fazed. The trainer said the horse needed more work now to keep him at peak fitness and the break after his previous start had left him underprepared, a flaw he was not about to repeat. He ran Viva Pataca again, below his optimum 2,000 metre distance, in the Chairman's Trophy on April5 for a solid if uninspiring third. But the season's runaway leading trainer insists it was the perfect lead-up to redress the balance of his international record in the QEII. For Good Ba Ba, the same age as Viva Pataca but with more races behind him, the international ledger reads better, with three wins from six attempts. The cracks of age are yet to show, though trainer Andreas Schutz admitted a year ago after winning the Champions Mile in an unprecedented clean sweep of the season's 1,600m/mile events that he doubted there was any upside left. 'I doubt we can improve next season,' he said, 'but I would like to have him back and holding this level of form for another year.' Which Good Ba Ba has largely done, despite two controversial defeats early in the season that led to a change of jockey and a second most recently in the Queen's Silver Jubilee Cup over 1,400m, a race he won in 2008. Good Ba Ba's mile form has remained beyond argument - a second Hong Kong Mile at international level and a second Stewards' Cup, the peak mile domestically, have ensured that. Local punters will again make their idol favourite on Sunday as he seeks to equal Bullish Luck as a dual Champions Mile winner, though there are new threats from the emerging four-year-olds such as Collection. Time will tell if he remains the fastest gun after the 2009 Champions Mile, and time can be a fickle mistress, but Good Ba Ba and Schutz will go in confident that their day is not yet over.