There once was a time when just about anyone on Earth could tell you who the heavyweight champion of the world was.
These days, boxing's prestige has disintegrated, with YouTubers and ill-equipped influencers sullying the sweet science's name.
Previously, the only thing bigger than the egos of those in the square circle were their reputations and the shows they put on under the brightest lights.
Whether going toe-to-toe on soil far from home or slugging it out on pay-per-view in Vegas, here are the top ten greatest heavyweight boxing fights of all time and the fighters that made them.
1. Muhammad Ali RTD14 Joe Frazier – October 1, 1975 – Manila, Philippines
2. Joe Frazier UD15 Muhammad Ali – March 8, 1971 – Madison Square Garden, NY, USA
3. George Foreman KO5 Ron Lyle – January 24, 1976 – Caesars Palace, NV, USA
4. Larry Holmes SD15 Ken Norton – June 9, 1978 – Caesars Palace, NV, USA
5. Jack Dempsey KO2 Luis Firpo – September 24, 1923 – Polo Grounds, NY, USA
6. Riddick Bowe UD12 Evander Holyfield – November 13, 1992 – Thomas & Mack Center, NV, USA
7. Rocky Marciano KO13 Jersey Joe Walcott – September 23, 1952 – Philadelphia Municipal Stadium, PA, USA
8. Floyd Patterson KO6 Ingemar Johansson III – March 13, 1961 – Convention Hall, FL, USA
9. Muhammad Ali KO8 George Foreman – October 30, 1974 – Kinshasa, Zaire
10. Ike Ibeabuchi UD12 David Tua – June 7, 1997 – Arco Arena, CA, USA