best undefeted fighter in each division

[TheDemolitionDan]

Heavyweight-Chris Arreola
Cruiserweight-Mateusz Masternak
Light Heavyweight-Chad Dawson
Super Middleweight-Lucian Bute
Middleweight-Arthur Abraham
Light Middleweight-James Kirkland
Welterweight-Floyd Mayweather Jr.
Light Welterweight-Tim Bradley
Lightweight-Edwin Valero
Super Featherweight-Jorge Linares
Featherweight-Chris John
Super Bantamweight-Juan Manuel Marquez
Bantumweight-Abner Mares
Super Flyweight-Koki Kameda
Flyweight-Cesar Seda Jr.

The last two Divisions I don't follow and don't really care who fights down there.

[Pugilistic]

Heavyweight - Ruslan Chagaev
Cruiserweight - ??
Light Heavyweight - Chad Dawson
Super Middleweight - Andre Direll
Middleweight - Arthur Abraham
Junior Middleweight - James Kirkland
Welterweight - Floyd Mayweather Jr
Junior Welterweight - Timothy Bradley
Lightweight - Edwin Valero
Super Featherweight - Jorge Linares
Featherweight - Chris John
Super Bantamweight - Juanma Lopez
Bantamweight - ??
Super Flyweight - ??
Flyweight - ??
Junior Flyweight - Ivan Calderon
Minimumweight - ??