Despite falling behind early, the Matildas struck back with three first-half goals from Kerr.

Emily Van Egmond added a fourth via the penalty spot in the second 45, before Japan scored a late consolation.

The win puts them on six points, three ahead of USA who defeated Brazil 4-3. The Matildas now play Brazil in their final game, with a point enough to win the Tournament of Nations. 

Here are the best pics from the Matildas' 4-2 win over Japan in San Diego.