The match at TIO Stadium in Darwin was competitive in the first half but the Sandgropers stormed clear after the long break.
Joel Houghton was the leading scorer with four goals, while Mitch Duncan and Matt Fyfe bagged three each.
Northern Territory had their fair share of the football in the opening half but were forced into over-possession by the skilful and relentless WA defence.
When they upped the ante in the second half, NT was unable to go with a WA side with a noticeable class advantage.
Mark Hutchings was outstanding through the midfield while David Swallow continued his fine form across half back and later in the midfield.
Duncan’s game across half-forward was one of the highlights as was the performance of Nicholas Winmar on the wing.
The winning WA ruck combination of Josh Donaldson and Cameron Kickett were also pivotal in the result.
The NT’s best included midfielder Scott Taylor who was hard at it all night and never gave in, while Roland Ah Chee showed plenty of vigour.
Another who impressed with limited opportunities was Troy Taylor up forward. His touch and athleticism was a joy to watch.
Northern Territory 1.2 4.6 4.7 6.9 (45)
Western Australia 1.4 5.7 8.11 16.12 (108)
GOALS
Northern Territory: Dion Gordon 2, Dean Staunton, Jerry Wilson, Paul Cox, Scott Taylor
Western Australia: Joel Houghton 4, Mitch Duncan 3, Matt Fyfe 3, Travis Colyer, Brandon Matera, David Swallow, Anthony Collica, Mark Hutchings, Nicholas Winmar
BEST
NT: James Wray, Dean Staunton, Scott Taylor, Cameron Jones, Pierce Liddle, Lindsay Lawler
WA: Mitch Duncan, Mark Hutchings, David Swallow, Chris Luff, Jamie Cripps
At TIO Stadium
The views in this story are those of the author and not necessarily those of the clubs or the AFL.