The Best Boxers Of All Time

Fact Is If Boxer's do not get rematches with other top boxer's then - that makes it difficult to rank them....and if they do get rematches, and 1 wins 1 a piece...then the best 2 out of 3 is sufficient. So, my rankings factor in who dodged who...to the extent of my knowledge..Marciano never lost a fight in 49 fights...(by nature..it is tough guys who get into boxing...so no matter the era 49 and 0 is formiddable....) George Foreman has the 2nd best record of all time in my calculation.