Question: who was the best heavyweight boxer of all time?
Answer: Jack Johnson. 8 of 10., Rocky Marciano. 7 of 10. ... , Jack Dempsey. 6 of 10. ... , George Foreman. 5 of 10. ... , Joe Frazier. 4 of 10. ... , Larry Holmes. 3 of 10. ... , Evander Holyfield. 2 of 10. ... , Mike Tyson. 1 of 10. ...