Netball Quad Series: England head coach Tracey Neville says the sport is about 1% margins

England head coach Tracey Neville admits there is "always expectation for the Roses to win" as her side prepares for this month's Quad Series.

England will play Australia, New Zealand and South Africa in the round-robin event between 15-23 September.

Neville, 41, led England to their first ever Commonwealth Games gold in April, beating Australia 52-51 in the final.