The title of Pay-Per-View King has been a coveted one amongst boxers ever since it hit popularity in the 1980s.
Pay-per-view can be seen as a measure of the spread of a boxer's influence over the spectating market, how badly fans would like to see their most beloved heroes and most hated athletes perform when it matters most.
Ever since the first pay-per-view showing of Muhammad Ali's and Joe Frazier's 'Thrilla In Manila', the paid experience of watching a big fight live has become a customary practice amongst boxing fans around the world.
From groups of families and friends gathering together for pay-per-view parties with everyone pitching in to the die-hard fan that want to give his favorite boxer a show of gratuity, pay-per-view events have become some of the most anticipated of the year.
The current king of pay-per-view would have to be none other than undefeated superstar Floyd Mayweather Jr., who in his last three fights has generated more than any other boxer has in his entire career.
Mayweather has also been the pioneer and leader of HBO's award-winning series, HBO 24/7, an exclusive show that gives fans a unique and unprecedented inside look into each of the boxer's lives in the final four weeks leading up to his fight.
The series has been largely helpful to pay-per-view sales and with a persona as polarizing as his, it is no surprise Mayweather continues to dominate the world of pay-per-view.
There are, however, many other fighters that have made their mark on the televised world's largest stage and in this slideshow, we take a look at the top ten bouts that sold the most number of units in pay-per-view history.
Note that there are 14 bouts in totality, being that with the given estimates, six bouts are tied into similar places within the range of the top ten.