Campbell set to hit jackpot in pool

A huge payday looms for Cate Campbell as she powers towards becoming Australian swimming's biggest prize money earner in a single year. The former world champion is in sight of a cheque for at least $A300,000 if she maintains her winning ways in the final leg of the World Cup series which starts in Kazan, Russia on Saturday (AEDT). And that's not counting what is still on offer in the lucrative International Swimming League (ISL) which the Australian potentially has two more rounds to contest. Campbell's immediate focus is the World Cup circuit where she leads the overall women's standings…