Having won twice already, the Olympic champion Canadian women are assured of making the quarterfinals of the CONCACAF W Gold Cup. But a victory Wednesday over No. 43 Costa Rica in its final Group C game at Houston's Shell Energy Stadium and the 10th-ranked Canadians will likely go into the knockout round as the top seed. Under tournament rules, in the knockout round it's No. 1 versus No. 8, No. 2 versus No. 7, No. 3 versus No. 6 and No. 4 versus No. 5. Canada has already dispatched No. 104 El Sa