Saturday’s fight between Floyd Mayweather and Conor McGregor is arguably the biggest bout of all time. That means plenty of casual fans who know nothing about boxing or MMA will be tuning in.

For those that might not know a lot about either sport, here are 50 quick facts about Mayweather, McGregor and the fight itself:

  1. Mayweather is from Grand Rapids, Michigan
  2. McGregor is from Dublin, Ireland
  3. Mayweather’s birth name is Floyd Joy Sinclair
  4. McGregor’s birth name is Conor Anthony McGregor
  5. Mayweather is 11 years older than McGregor
  6. Mayweather made his professional boxing debut in 1996
  7. McGregor made his pro MMA debut in 2008
  8. McGregor had his first UFC fight on April 6, 2013
  9. Saturday will be McGregor’s first-ever pro boxing match
  10. Mayweather’s last fight was a win against Andre Berto on Sept. 12, 2015
  11. McGregor’s last fight was a win against Eddie Alvarez on Nov. 12, 2016
  12. Mayweather has earned approximately $700 million in his career
  13. Mayweather could earn $300 million for Saturday’s fight
  14. Mayweather led all celebrities with $300 million in earnings in 2015
  15. McGregor’s earnings for Saturday could surpass $100 million
  16. McGregor’s highest guaranteed payday for a UFC fight is $3 million
  17. Mayweather is 49-0 in his pro boxing career
  18. McGregor is 21-3 in his pro MMA career
  19. Mayweather’s last defeat came against Serafim Todorov at the 1996 Olympics
  20. McGregor’s last defeat came against Nate Diaz at UFC 196 on March 5, 2016
  21. Mayweather has won championships in five different weight classes
  22. McGregor is the only UFC fighter to be the champion in two weight classes simultaneously
  23. McGregor won fights at 145 pounds, 155 pounds and 170 pounds between December 2015 and November 2016
  24. Mayweather has no knockouts in his last seven fights
  25. McGregor has seven knockout victories in 10 UFC fights
  26. Only two of McGregor’s fights have gone the distance
  27. Both fighters have guaranteed knockouts
  28. Mayweather has retired two times in his career
  29. Mayweather has said Saturday will be his last fight
  30. McGregor plans to compete in both boxing and MMA after Saturday’s fight
  31. McGregor has a two-inch reach advantage on Mayweather
  32. McGregor is an inch taller than Mayweather
  33. Mayweather opened as a -2200 favorite when betting odds were first created last year
  34. Mayweather is down to a -400 favorite at some online sportsbooks
  35. Only one judge has ever scored a fight for Mayweather’s opponent
  36. Mayweather has been knocked down once in his career, doing so in a victory over Carlos Hernandez in 2001
  37. McGregor has fought the maximum 25 minutes just once in his MMA career
  38. Saturday will be Mayweather’s 15th straight fight in Las Vegas
  39. Four of McGregor’s last five fights have been in Las Vegas
  40. All three of McGregor’s MMA losses have come by submission
  41. Mayweather has boxed 387 career three-minute rounds
  42. McGregor has fought 37 career five-minute rounds in MMA
  43. The newly created “Money Belt” is on the line in Saturday’s fight
  44. Saturday’s fight will have a 154-pound limit
  45. Both fighters will wear eight-ounce gloves
  46. The fight is expected to challenge the PPV record of 4.6 million buys
  47. Robert Byrd will be the referee for the fight
  48. Showtime pay-per-view will broadcast the fight
  49. The broadcast team will include Brian Custer, Mauro Ranallo, Al Bernstein, Paul Malignaggi, Jim Gray and Steve Farhood
  50. The fight will cost $99.99 to order on PPV
Floyd Mayweather Conor McGregor
Floyd Mayweather Jr. and Conor McGregor, pictured at Barclays Center on July 13, 2017 in the Brooklyn borough of New York City, might generate more than five million PPV buys for their super-fight. Getty Images