The result is normally a 37-man squad assembled to take on one of the SANZAR powerhouses - in the case of the upcoming tour to New Zealand, possibly the most powerful of all.
Spectators, journalists and pundits perform their own selection process, predicting and second guessing who will be granted the honour of pulling on the famous red shirt.
The day itself brings with it endless live blogs at the official unveiling, while social media is awash with speculation and rumours.
Then, once the all-important names have been revealed, comes the unveiling of the chosen one - tour captain.
From Robert Sneddon and Andrew Stoddart - who led the British & Irish Lions on their first ever tour in 1888 - through Willie John McBride and two-time skipper Martin Johnson, the list is an exclusive honour roll.
Sam Warburton was selected as the man to lead the Lions to Australia 2013 and his name will surely be in the hat for New Zealand - but who will it be?