With just two weekends of racing left for our top performers to impress the selection committee and earn a place in the Hong Kong International Races on December 16, this Sunday's Ladies' Purse meeting at Sha Tin acquires extra significance. It's make-or-break time. Potential HKIR candidates had better show what they are made of - now or never. This is especially true in the case of the Pok Oi Cup (Premier Handicap -2000m) with possibly more places in the Hong Kong Cup and Vase on the line than in the Mile and Sprint. David Hayes has won the Pok Oi Cup for the last two years with Hunting Lad in 1999 and Helene Vitality in 2000 and he is bidding for a repeat success with the latter performer and his stable companions, Momentum and Caracoler. A win for either of the three would greatly enhance their chances of winning a place in one of the big races next month, though this, of course, applies to several others in the race. Helene Vitality certainly stands a better chance of victory over this 2000m than he did over the inadequate 1400m and 1600m trips on his first two starts of the season. Last year he made the cut for the Hong Kong Vase. Are we set for the same again in 2001? Momentum, runner-up to Industrial Pioneer in the Hong Kong Derby last March, hasn't had the best of luck in his last two starts and he hasn't won since April of last year. Can this run of bad fortune change on Sunday? Caracoler, meanwhile, second in the Cape of Good Hope Derby (Gr.1-2000m) in his native South Africa last year, put up a considerably improved effort on his third Hong Kong start in the Sha Tin Trophy behind Shaxi Fortune and he is well capable of running the frame. Survey General has already represented Hong Kong in the International races, finishing sixth behind Jim And Tonic in the Cup in 1999 and he will need a repeat of his run in the Kwangtung Handicap Cup two months ago when he defeated the likes of Shaxi Fortune and Momentum, if he is pull off a similar feat two years later. Peak Power, the winner of last year's Ladies' Purse, finished eighth, a length and a half behind the sixth-placed Momentum over the mile at Sha Tin last week although he was just a neck behind another of his rivals on Sunday, Aucash, on his previous outing. Aucash has won his last two starts and though the Hong Kong Derby is possibly his seasonal priority over the International Races, this would be a very nice contest for him to win en route. Lucky Sabre, already a winner twice this season, and Magic Hands, four times victorious last term, are in good form but they will be seriously tested in this grade. Litigado, a former Group 1 winner in Argentina, has yet to show anything like his home form in Hong Kong and must improve, while High Spirits looks up against it as well.