Magee held the Commonwealth light-welterweight title twice, and challenged for the European light-welterweight and British welterweight titles. The Belfast born fighter also won a bronze medal in the welterweight division at the 1992 World Junior Championships.
This is the second major accolade the book has garnered having already been announced as joint winner of the William Hill Sports Book of the Year in November.
The book beat out competition from Andy Lee's biography 'The Fighter' as well as 'Tony 10' by Declan Lynch and Tony O'Reilly.
Here is the longlist for the award:
eir sport Book of the Year longlist:
The Obsession - Seán Cavanagh with Damian Lawlor (Black and White Publishing)
100 Greatest GAA Moments - John Scally (Black and White Publishing)
Winners - Hugh Cahill (Hachette Ireland)
Dream. Believe. Achieve. My Autobiography - Jonathan Rea (Harper Collins)
Driven - Rosemary Smith with Ann Ingle (Harper Collins)
Play It Again, Des - Des Cahill (Sport Media)
The Boys of ’93: Derry’s All-Ireland Kings - Eamonn Coleman with Maria McCourt (Merrion Press)
Tony 10 - Declan Lynch and Tony O’Reilly (Gill Books)
Fighter - Andy Lee with Niall Kelly (Gill Books)
At All Costs - Davy Fitzgerald with Vincent Hogan (Gill Books)
The Rory’s Stories Guide to Being Irish - Rory O’Connor (Gill Books)
110% Legend - Tony Keady with Liam Hayes (Umbrella Publishing)
Dark Arts - Mike Ross with Liam Hayes (Umbrella Publishing)
Game Changer - Cora Staunton (Penguin Ireland and Transworld Ireland)
The Hurlers - Paul Rouse (Penguin Ireland and Transworld Ireland)
Dublin: The Chaos Years - Neil Cotter (Penguin Ireland and Transworld Ireland)
The Lost Soul of Eamonn McGee - Paul D. Gibson (Mercier Press)
The Little Book of Irish Athletics - Tom Hunt (The History Press)
Great Moments in Irish Rugby - Sportsfile (O’Brien Press)
Behind the Lines, No. 2: Great Irish Sports Stories from the 42 - The42.ie (Journal Media)
The Last Amateurs - Jonathan Bradley (Blackstaff Press)
The Man Who Was Never Knocked Down - Rónán Mac Iomaire (Rowman and Littlefield)
The Growth and Development of Sport in County Tipperary 1840-1880 - Pat Bracken (Cork University Press)
The winner was chosen by a panel of journalists at an awards ceremony in Dublin today, with Magee and Gibson receiving a €1,500 cash prize, a specially commissioned trophy and €10,000 worth of TV advertising on eir sport.