Since last summer, Radford has been hard at it. He finished 22nd in the 10km at the world championships and followed that with a national 1500m [pool] record while in the US with the New Zealand youth squad in June. His 15m 38s effort broke the record he had set earlier in the year.
On Sunday he will hope his heavy training workload of between 85km-90km a week will have him ready for what promises to be a ding-dong battle with Burmester and fellow NZ swim team members Dean Kent and Michael Jack.
To qualify for the Olympics, Radford must finish in the top 16 at the Seville championships.
While he has yet to confirm his commitment to the series here, he says he is likely to swim three, possibly four, of the five races.
Helen Norfolk (the 2004 and 2005 winner) and Melissa Ingram (who won last year), will continue their battle. They have provided the quinella in all three Harbour crossings and will be to the forefront again with top triathlete Debbie Tanner another to watch.
The first male and female across the line at the Viaduct Harbour will collect $1500. Prizemoney in each of the five races totals $5200. The series winners will collect a further $2000 with the total prize pool for the summer a cool $35,000.