The result saw the co-hosts seal a 4-0 win that dumped reigning Olympic champions Canada out of the World Cup.
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The American coach praised his players for the doggedness to qualify for the Round of 16 of the tournament.
Banyana Banyana scored in either half through Linda Motlhalo and Thembi Kgatlana, and looked comfortable before Argentina scored twice in five minutes.
He spoke as the nine-time African champions continue their preparations for the 2023 FIFA Women’s World Cup finals.