Who you got? 1. Hagler 2. Monzon 3. SRR 4. Hopkins 5. RJJ 6. GGG 7. Toney 8. Tiger 9. LaMotta 10. Valdez
Monzon Giardello Hagler Hopkins Fullmer Tiger Benvenuti Griffith Lamotta SRR In no order but those are the ones who came to mind first
In a ranking of the best middleweights of all time I would never put Roy Jones Jr. before GGG. Roy after winning the world title in 1993 defended it only once, then went up to super middleweight and never fought at middleweight again. GGG lost the world title in his 20th defense and was world champion for more than 10 years. A p4p ranking is one thing, a ranking of the best in that category is another.
1. Monzon 2. Hagler 3. SRR 4. Hopkins 5. Burley (assuming we factor in fights contested during and just before WW2) 6. Williams (as above) 7. Apostoli (as above) 8. GGG 9. LaMotta (assuming we factor in fights contested during WW2) 10. Tiger
If the criteria is they have to fought after WW2 and if they have their whole career, including during and before WW2 is factored in, Apostoli is the highest on my list that isn't on yours, for whatever that is worth.
No, when GGG lost in the rematch with Canelo, the Kazakh was defending his WBA world title for the 20th time. The fight against Martirosyan, in the previous match, was his 19th defense of the WBA world title. https://boxrec.com/wiki/index.php/Gennady_Golovkin_vs._Saul_Alvarez_(2nd_meeting)
Golovkin won the interim middleweight title from Milton Nunez by first round ko,then he was immediately upgraded to WBA Reg. Sturm was upgraded to the newly created WBA super. Golovkins first defense was against Nilson Julio Tapia. If Tapia was defense number one, then Martirosyan was defense number 20. The 2nd Robbery vs Canelo was going to be the 21st, and if GGG was still champ then his 22nd defense would have been vs Derevyanchenko. 23rd vs Szeremeta, and 24th vs Murata. That's why Golovkin tied Hopkins record, even with supposedly losing the Canelo rematch. And actually Hopkins only has 19 because one of those defenses was a no contest.