Football Ferns coach Michael Mayne says there's plenty of competition among the players and he'll use that as the side faces Mexico and the USA.
The Football Ferns kick-off against Mexico at 3pm, before a second match on Monday against the 29th ranked side in the world.
New Zealand then face the United States, who are ranked second in the world, next Thursday.
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New Zealand's Katie Bowen. Photo: Shane Wenzlick / Phototek.nz