The New Zealand outfit gave up a two-goal lead to draw 3-3 in wet conditions in Wellington and Greenacre, who scored twice for his side, wants an improved performance against the Central Coast Mariners on Sunday, no matter what the weather brings.
"We've got to pick ourselves up and go again. We've got a tough game against Central Coast, so we have to learn from the draw and be better," he said.
"Championship-winning teams need to adapt to the conditions. We've got a point on the board and we scored three goals at home, so that's positive. But we stopped doing what we do well (during the game) and perhaps subconsciously we thought we already had the game won when we were 3-1 up. We needed to play smarter football in those conditions and unfortunately we didn't in the latter stages."
Greenacre said it was nice to be in the right place at the right time to score for the Phoenix but insists it doesn't mean much personally when the team fails to win.
"It's been a while since I've got a brace and if it was to win the game I would have been absolutely delighted," he added. "Drawing the way we did really took the gloss off it."