Mr Maguire finished on top of the leaderboard with a total of 144 correct tips and accumulative weekly margin of 633.
The prize for winning the competition is two tickets to the 2014 AFL Toyota Grand Final including flights and accommodation.
"I'm pretty stoked, it will be my first time at a Grand Final which is really exciting," Mr Maguire said.
"I spent a lot of time researching the ins and outs each week but once I got in front I just made sure to tip the favourites.
"It may be a couple more years before I get to see the GIANTS play in a Grand Final so this will be a good start."
Arch tipping rivals Kevin Sheedy and Melissa Doyle went head-to-head throughout the home and away season with the GIANTS inaugural coach claiming bragging rights – finishing four tips clear.
Thanks to the GIANTS' co-major partner Lifebroker for supporting the competition throughout the season.
