Who is the only undefeated Heavyweight World Champion in boxing history to retire with a perfect record?

Which legendary boxer was known by the nickname "The Real Deal"?

Who was the first boxer to win world titles in eight different weight divisions?

In what year were the Marquess of Queensberry rules, which formed the basis of modern boxing, first published?

Which boxer recorded the fastest knockout in a heavyweight title fight, stopping his opponent in just 91 seconds in 1988?

What iconic 1974 bout in Kinshasa, Zaire, pitted Muhammad Ali against George Foreman?

Which division sits between the Welterweight and Middleweight divisions in professional boxing?

How long is a standard professional boxing round for male championship fights?