During his Black Sticks career he played at the 2006 Melbourne Commonwealth Games, 2008 Beijing Olympics and narrowly missed selection for the 2012 London Olympic side.
Collier built his reputation as a workhorse in the midfield, with a skill set based around sound fundamentals and working together with the players around him.
He's had some injury setbacks over the years with the likes of a fractured sternum, head knocks and shoulder issues but loved every minute in the black jersey.
Collier identifies his two biggest highlights as qualifying for the Beijing Olympics with a thrilling win over Argentina in front of a home crowd at North Harbour, as well as the Black Sticks' come-from-behind win over Korea in their Beijing opener.
With the curtain drawn on his international career, Collier will remain close to the sport in both a playing and coaching capacity, and will be taking to the turf for the Central Mavericks in next month's national league.
"I'm playing NHL this year for Central and I'll look to keep playing club hockey and do some coaching so I'll certainly be staying within hockey circles and continue giving back to the sport from that point of view,'' he said.
"I think the current Black Sticks squad have got a great opportunity with some of the young guys coming through mixed with the seniors as mentors - that's a recipe for success. There's an opportunity to create a team culture that's uniquely theirs as they set their minds on Rio.''
