"Tell me who your number six is and I'll tell you your playing style."
So said a friend of Matildas head coach Tony Gustavsson early on in the Swede's coaching career in a distilled philosophy that has informed his tactical decision-making ever since.
From Lisa Dahlkvist at Tyresö FF in Sweden in 2013/14 to Julie Ertz at the US women's national team throughout two Women's World Cups, Gustavsson has always embraced the number six in his teams.
