Interesting list. Is this list accurate?
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Accurate? There's no such thing as objective 'accuracy' when you're talking P4P. It's basically just subjective nonsense - although if enough people agree on it then I guess it has some meaning - and Boxrec's is just algorithmically generated nonsense. Generally - when compared to the overall consensus - Boxrec's P4P is the worst major list out there.
I don't subscribe to P4P at all myself, though I have got a kinda loose list of who I consider the elite at any given time in no particular order, but If that kinda thing rocks your boat though TBRB or the RING are probably closer to what most people would consider a realistic list:
https://tbrb.org/p4p
TBRB
1
Saul Alvarez
MEX
55-1-2 (37)
Super Middleweight / Light Heavyweight
2
Naoya Inoue
JPN
21-0-0 (18)
Bantamweight
3
Terence Crawford
USA
37-0-0 (28)
Welterweight
4
Oleksandr Usyk
UKR
18-0-0 (13)
Heavyweight
5
Errol Spence Jr.
USA
27-0-0 (21)
Welterweight
6
Josh Taylor *
SCT
18-0-0 (13)
Jr. Welterweight
7
Tyson Fury *
ENG
30-0-1 (21)
Heavyweight
8
Juan Francisco Estrada *
MEX
42-3-0 (28)
Jr. Bantamweight
9
Gennady Golovkin
KAZ
38-1-1 (34)
Middleweight
10
Teofimo Lopez *
USA
16-0-0 (12)
Lightweight
Comparison chart from Wiki for illustrative purposes (it's looks a little outta date) - the columns on the right are Ring, BWAA, TBRB, ESPN and Boxrec in that order. You'll notice how most of the others are largely in agreement whereas Boxrec (on the extreme right) have 5 fighters in their top 10 that aren't on any of the other lists and omit 4 that are on every other list. Should give you an idea how they're generally regarded.
{"data-align":"none","data-size":"full","src":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/f\/fc\/Flag_of_Mexico.svg\/23px-Flag_of_Mexico.svg.png"} Canelo Álvarez
56–1–2 (38 KO)
Super middleweight
WBA (Super), WBC, WBO and The Ring
1
1
1
1
1
{"data-align":"none","data-size":"full","src":"https:\/\/upload.wikimedia.org\/wikipedia\/en\/thumb\/9\/9e\/Flag_of_Japan.svg\/23px-Flag_of_Japan.svg.png"} Naoya Inoue
20–0 (17 KO)
Bantamweight
IBF, WBA (Super), and The Ring
2
3
2
3
–
{"data-align":"none","data-size":"full","src":"https:\/\/upload.wikimedia.org\/wikipedia\/en\/thumb\/a\/a4\/Flag_of_the_United_States.svg\/23px-Flag_of_the_United_States.svg.png"} Terence Crawford
37–0 (28 KO)
Welterweight
WBO
3
2
3
2
2
{"data-align":"none","data-size":"full","src":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/4\/49\/Flag_of_Ukraine.svg\/23px-Flag_of_Ukraine.svg.png"} Oleksandr Usyk
18–0 (13 KO)
Heavyweight
–
4
7
4
8
–
{"data-align":"none","data-size":"full","src":"https:\/\/upload.wikimedia.org\/wikipedia\/en\/thumb\/a\/ae\/Flag_of_the_United_Kingdom.svg\/23px-Flag_of_the_United_Kingdom.svg.png"} Josh Taylor
18–0 (13 KO)
Light welterweight
IBF, WBA (Super), WBC, WBO and The Ring
5
–
6
7
–
{"data-align":"none","data-size":"full","src":"https:\/\/upload.wikimedia.org\/wikipedia\/en\/thumb\/a\/a4\/Flag_of_the_United_States.svg\/23px-Flag_of_the_United_States.svg.png"} Errol Spence Jr.
27–0 (21 KO)
Welterweight
IBF and WBC
6
4
5
4
4
{"data-align":"none","data-size":"full","src":"https:\/\/upload.wikimedia.org\/wikipedia\/en\/thumb\/a\/a4\/Flag_of_the_United_States.svg\/23px-Flag_of_the_United_States.svg.png"} Teófimo López
16–0 (12 KO)
Lightweight
IBF, WBA (Super), WBO, and The Ring
7
5
10
5
–
{"data-align":"none","data-size":"full","src":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/f\/fc\/Flag_of_Mexico.svg\/23px-Flag_of_Mexico.svg.png"} Juan Francisco Estrada
42–3 (28 KO)
Super flyweight
WBA (Super) and The Ring
8
9
8
10
–
{"data-align":"none","data-size":"full","src":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/4\/49\/Flag_of_Ukraine.svg\/23px-Flag_of_Ukraine.svg.png"} Vasyl Lomachenko
14–2 (10 KO)
Lightweight
–
9
8
–
9
–
{"data-align":"none","data-size":"full","src":"https:\/\/upload.wikimedia.org\/wikipedia\/en\/thumb\/9\/9e\/Flag_of_Japan.svg\/23px-Flag_of_Japan.svg.png"} Kazuto Ioka
26–2 (15 KO)
Super flyweight
WBO
10
–
–
–
–
{"data-align":"none","data-size":"full","src":"https:\/\/upload.wikimedia.org\/wikipedia\/en\/thumb\/a\/ae\/Flag_of_the_United_Kingdom.svg\/23px-Flag_of_the_United_Kingdom.svg.png"} Tyson Fury
30–0–1 (21 KO)
Heavyweight
WBC and The Ring
–
6
7
6
3
{"data-align":"none","data-size":"full","src":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/d\/d3\/Flag_of_Kazakhstan.svg\/23px-Flag_of_Kazakhstan.svg.png"} Gennady Golovkin
41–1–1 (36 KO)
Middleweight
IBF and IBO
–
10
9
–
5
{"data-align":"none","data-size":"full","src":"https:\/\/upload.wikimedia.org\/wikipedia\/en\/thumb\/a\/ae\/Flag_of_the_United_Kingdom.svg\/23px-Flag_of_the_United_Kingdom.svg.png"} Anthony Joshua
24–1 (22 KO)
Heavyweight
IBF, WBA (Super), WBO, and IBO
–
–
–
–
7
{"data-align":"none","data-size":"full","src":"https:\/\/upload.wikimedia.org\/wikipedia\/en\/thumb\/a\/a4\/Flag_of_the_United_States.svg\/23px-Flag_of_the_United_States.svg.png"} Deontay Wilder
42–1–1 (41 KO)
Heavyweight
–
–
–
–
–
9
{"data-align":"none","data-size":"full","src":"https:\/\/upload.wikimedia.org\/wikipedia\/en\/thumb\/a\/a4\/Flag_of_the_United_States.svg\/23px-Flag_of_the_United_States.svg.png"} Jermall Charlo
31–0 (22 KO)
Middleweight
WBC
–
–
–
–
6
{"data-align":"none","data-size":"full","src":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/f\/fc\/Flag_of_Mexico.svg\/23px-Flag_of_Mexico.svg.png"} Óscar Valdez
29–0 (23 KO)
Super featherweight
WBC
–
–
–
–
8
{"data-align":"none","data-size":"full","src":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/9\/99\/Flag_of_the_Philippines.svg\/23px-Flag_of_the_Philippines.svg.png"} Manny Pacquiao
62–7–2 (39 KO)
Welterweight
–
–
–
–
–
10
https://www.ringtv.com/ratings/?weightclass=251
https://www.espn.com/boxing/story/_/...d-debut-top-10
https://www.bwaa.org/single-post/can...for-pound-king
In terms of US dominance the US generally hold more of the P4P slots that other nations usually followed by Mexico and the distribution of titles tends to be similar, but to a large degree this reflects the fact that the US has the greatest number of professional boxers in the world with Mexico not far behind. In terms of absolute numbers no other nation comes close... I ain't gonna check again now but last I looked there were something like 3500 active US boxers, maybe 3000 from Mexico and UK coming in third with maybe a thousand or so and Japan around the same. Could be the numbers active have changed some due to COVID though.
Anyway crunch the numbers a bit and whilst the US and Mexico are usually in front in outright numbers, when worked on a per boxer it turns out the major boxing nations tend to come out with roughly equal - or at least comparable - success when averaged over time.