Christine Sinclair missed out on the chance to become the first player to score in six FIFA World Cups as Canada was held at the hands of Nigeria.
Nigeria goalkeeper Chiamaka Nnadozie saved a Sinclair penalty early in the second half as the Olympic champions were frustrated in Melbourne.
Deborah Abiodun was sent off late for Nigeria, however they won a point with a battling display.
Canada and Nigeria have one point in Pool B, behind co-hosts Australia.
The Canadians face the Republic of Ireland in their next match on July 26, after the Irish were beaten by Australia on Thursday.
More follows.