The rampaging prime bull. The seasoned—some would say senile—fading veteran clinging to one last day in the Las Vegas spotlights.
To many of us, the premise is not unfamiliar.
Movies, television and theatre often present such a scenario. Think Paul Newman's ''Fast Eddie'' Felson schooling the Tom Cruise's young brash upstart, Vincent. Or even Ewan McGregor during Obi-Wan Kenobi's fierce yet triumphant battle with a youthful Anakin Skywalker.
Film leaves room for compassion and empathy, often preferring to present humanity rather than cruelty to its audience. Grizzled veterans go out on their shield in a blaze of glory, even perhaps with their head held high.
Sporting theatre has no such qualms. Boxing, even less so.
There's a reason for it being known as "the toughest game." Often, former great champions abandon the sport long after their chance to leave with hand held high has expired, preferring to stay longer and risk that when they do finally hang up the gloves, they will leave with feet held higher.
Some may read this prelude and question the relevance seeing as though Mosley is only seven years younger.
That is true. However, seven years is a lifetime in boxing, especially when there is documentary proof of a steep decline in ''Sugar'' Shane's performances this past year.
Joyce Carol Oates once remarked that ''boxing has become America's tragic theatre.'' Combatants are at the whim of boxing deities, no-one, no matter how special fighter is immune to their influence.
Unfortunately, as Muhammad Ali would tell, when you reach the glass cliff, not only is recuperation difficult, you forever remain only one push away from permanent retirement.
The stage is set: Can Mosley defy convention? Can he thwart old Father time? Or will he become another world class name on Manny Pacquiao's rapidly burgeoning resume?
We will be providing updates throughout Wednesday to Friday, including the press conference today at 12pm PT, 3pm ET and the weigh-in on Friday at 3pm PT, 6pm ET.
So stay with us this week as we take a look into some of the insight and happenings that fight week brings.