Before the ring magazine ko was the the first magazine to give out pound for pound titles here here is the number 1 fighter of each year (except 1987 no list) https://boxrec.com/media/index.php/KO_"Best_Fighter"_Poll:_A_Survey_of_the_Experts 1979:Roberto Duran 1980: Thomas hearns 1981: ray leonard 1982-86: Marvin Hagler 1988-89: mike tyson If they did have a list in 1987 who would be #1
KO Magazine posted a pound-for-pound list in every issue. They posted the sanctioning body ratings, their own ratings, and their DYNAMITE DOZEN - which was a top12 pound-for-pound list. I have some of those issue. The Dynamite Dozen as of May 15, 1987, was: 1. Ray Leonard 2. Mike Tyson 3. Michael Spinks 4. Marvin Hagler 5. Thomas Hearns 6. Azumah Nelson 7. Edwin Rosario 8. Lloyd Honeyghan 9. Donald Curry 10. Evander Holyfield 11. Hector Camacho 12. Mike McCallum The Dynamite Dozen as of June 14, 1987, was: 1. Mike Tyson 2. Michael Spinks 3. Marvin Hagler 4. Thomas Hearns 5. Evander Holyfield 6. Azumah Nelson 7. Edwin Rosario 8. Lloyd Honeyghan 9. Donald Curry 10. Hector Camacho 11. Mike McCallum 12. Miguel Lora (I think Leonard got bounced because he immediately announced his retirement again for like the 800th time) The Dynamite Dozen as of July 15, 1987, was the same as June. The Dynamite Dozen as of August 15, 1987, was: 1. Mike Tyson 2. Michael Spinks 3. Marvin Hagler 4. Thomas Hearns 5. Evander Holyfield 6. Azumah Nelson 7. Lloyd Honeyghan 8. Mike McCallum 9. Edwin Rosario 10. Hector Camacho 11. Miguel Lora 12. Jung Koo Chang For the period ending November 15, 1987, was the same as August. The KO Magazine March 1988 issue (which included the November ratings - because issues were written months ahead of time) also included the YEAR END winners for 1987. Sugar Ray Leonard was named Fighter of the Year. Knockout of the Year was McCallum-Curry. Upset of the Year was Leonard-Hagler. Fight of the Year was Hilton-Drayton. Round of the Year was Czyz-Williams Round 3. Comeback of the Year was Frankie Duarte.
I think you have confused their Fighter of the Year voting with a Pound-for-pound list. They had a fighter of the year vote every year. They posted a pound-for-pound list every month. (They called it the Dynamite Dozen.) Sugar Ray Leonard was the KO Fighter of the Year in 1987.
[EDIT] As Dubblechin suggests: The Dynamite Dozen was the list of KO's top 12 pound for pound fighters. The end of year list, was 'experts' from around the globe giving a top 12 of their fighters of the year, with points awarded for position one to ten and then totaled up to create the final list. So it was not a pound for pound list. For instance Buster Douglas would rightly be on the end of year list for 1990, but by December 1990 would again rightly, not be in the Dynamite Dozen.
I would say KO magazine was the many Boxing magazines that I purchased through the years. It had a lot of great articles in it. I also used to purchase Ring, Boxing Illustrated too. Great lists by the way.