After setting an unratified world record of 49.3 in the heats, Canada led
from start to finish. Rosenfeld picked up just over a metre on
Washburn, and Schmidt closed up on the USA on the second leg. Then
Bell ran well for Canada, unexpectedly gaining ground on the USA. A
fine anchor leg by Robinson ensured second place for the USA, with
Cook, deriving some satisfaction after her disqualification from the
individual 100m, running a fine leg in anchoring Canada to a world
record of 48.4.