Zach Tuohy kicks dramatic Geelong winner after the siren

 Zach Tuohy is the toast of Geelong after scoring the winning goal for the Cats against Melbourne.

Zach Tuohy is the toast of Geelong after scoring the winning goal for the Cats against Melbourne.

Laois native Zach Tuohy had the biggest moment of his AFL career to date on Saturday, kicking the winning goal for Geelong after the final siren.

The 28-year-old marked the ball 30m from goal with five seconds left on the clock and held his nerve to give the Cats a two-point win over the Melbourne Demons at Kardinia Park in Geelong.

Tuohy, who was swung forward in a move made by defensive coach Matthew Scarlett to start the final term, took a contested mark against a lunging Neville Jetta.

Tuohy was mobbed by his Geelong teammates who ran in to celebrate with the defender-cum-forward.

"It's kind of a dream after the siren to win the game – it was a pretty special moment and I'm obviously pretty happy that it went through, but even if it didn't I would've been proud of the fact that I put myself in that position to get the win," he told reporters after the game.

Cats coach Chris Scott said it was Scarlett who deserved credit for moving Tuohy forward in the first place.

"Reg (Tuohy) did all the things in our front half that 'Scarlo' predicted he would," Scott said.

"He's a really good contested player and he's pretty cool under pressure too. There weren't many other players that we would have preferred with the ball in their hands at that stage."

Tuohy said he's not likely to make a habit of playing forward.

"It was news to me when it happened. It wasn't pre-planned. I've never played forward (in my career), not even for a minute," Tuohy said.

The former Laois Gaelic footballer has become one of the most successful Irish AFL players since starting his career at Carlton in 2010.

He has now played 161 AFL games (closing in on Tadhg Kennelly's 197) and has scored 51 goals. None have been quite as dramatic as his winner against the hapless Demons who were 31 points ahead early in the final quarter.