They are global sporting superstars, and they've got a story to tell.
From former Manchester United manager Alex Ferguson to ex-England captain David Beckham it seems everyone is releasing autobiographies in a blaze of promotion and headline grabbing excerpts -- and all in time for Christmas.
But whether the intention is to set the record straight, settle a few old scores or simply tell it like it is, the majority tend to live and die by their ghost writer.
Trying to capture the authenticity of the subject's voice and cram the book full of interesting anecdotes can be a daunting task.
But with the help of one respected author of several big football autobiographies, Ian Ridley, whose book on former England captain Tony Adams sold a million copies, here are 10 key components to a successful sporting tome.
Perhaps the most obvious commandment for any sporting book is that the subject matter has to be interesting.
While a big name can usually be guaranteed to bring with them a loyal following who will buy whatever they release, the more casual observer needs a little more persuasion.
Ridley's most famous subject was former England soccer captain Tony Adams, who famously battled alcohol addiction throughout the most successful parts of his career.
Another focused on former footballer Steve Claridge's issues with betting while his most recent, on former English Premier League referee Mark Halsey dealt with his recovery from cancer.
"The subject of the book has to be honest about these things," Ridley told CNN. "As a writer you have to press ever detail out of them and make sure you draw out the material."
Capture the voice
Any book must bring the character to life in their own words -- it is no good having David Beckham hypothesizing over the French renaissance period.
But get the ex-England captain talking about the influence of Alex Ferguson on his career or any of his famous 'hairdryer' moments and people will be gripped.
"You have to capture their voice," Ridley explains. "Ghostwriting is much more of a skill than is recognized."
One good example is the recent autobiography of Swedish striker Zlatan Ibrahimovic, entitled 'I am Zlatan', that manages to captures his supreme confidence.
For instance, the Paris Saint-Germain forward, who continually refers to himself in the third person, notes: "An injured Zlatan is a properly serious thing for any team."
Mining the seam
The odd five minute chat here or there isn't going to cut it -- an author needs to live and breathe his subject for months if not years.
That dictum is especially crucial if your sporting figure isn't particularly effusive at the outset -- as the relationship between the two grows so does the material.
"With the Adams book (the process) took about 18 months," Ridley said.
"Don't forget this was in the days before the Internet, which meant research was a lot more time consuming. Initially we did three months of interviews -- about 40 hours of tape."
Lessen outside influences
Obviously, the publisher is king in the process but Ridley says it is important to keep their influence -- and pressure -- to a minimum.
"I have never been under pressure from a publisher and I have never extended a deadline," he said.