I thought this might be interesting, and help us understand where various posters are coming from. Mine (Yeah. I'm older than DIRT): Heavyweight: Jack Dempsey Light Heavyweight: Mike McTigue Middleweight: Harry Greb Welterweight: Mickey Walker Junior Welterweight: Pinkey Mitchell Lightweight: Benny Leonard Junior Lightweight: Johnny Dundee Featherweight: Johnny Dundee Bantamweight: Abe Goldstein Flyweight: Pancho Villa
Heavyweight: Lennox Lewis Light-Heavyweight: Dariusz Michalczewski Middleweight: Vacated by James Toney, new lineage created by Hopkins at some point Welterweight: Oscar De La Hoya Lightweight: Vacated by Whitaker, new lineage created when Floyd beat Castillo Featherweight: Wilfredo Vasquez Bantamweight: Seems to have been vacant since the 80s Flyweight: Manny Pacquiao All info is from http://www.cyberboxingzone.com/boxing/pastchp.htm so may not be accurate, or reflective of the historical consensus.
HW: None LHW: Julio Cesar Gonzalez MW: Bernard Hopkins WW: Ricardo Mayorga LW: Joel Casamayor FW: Manny Pacquiao BW: None Fly: Wonjongham (?) 2003 was really going good at some points, and God awful in others.
Heavy: Sonny Liston Light heavy: Willie Pastrano Middle: Joey Giardello Junior middle: Ralph Dupas Welter: Emile Griffith Junior welter: Eddie Perkins Lightweight: Carlos Ortiz Super feather: Flash Elorde Feather: Sugar Ramos Bantam: Eder Jofre Fly: Hiroyuki Ebihara All of these were unified, I presume they were lineal.
Heavyweight: Mike Tyson Light-Heavyweight: Title Vacant Middleweight: Sumbu Kalambay Welterweight: Marlon Starling Lightweight: Julio Cesar Chavez Featherweight: Antonio Esparragoza Bantamweight: Title Vacant Flyweight: Yong Kang Kim
HW- Larry Holmes LHW- Dwight Braxton MW- Marvin Hagler WW- vacant JWW- Aaron Pryor LW- Alexis Arguello
HW Joe Frazier 175 Bob Foster 160 Nino Benvenutii 154 Vacant 147 Curtis Cokes 140 Nicolino Locche 135 Carlos Teo Cruz 130 Hiroshi Kobayashi 126 Johnny Famechon (I had never heard of him till just now) 118 Lionel Rose 112 Chartchai Chionoi I had too look up Cruz, Kobayashi, Famechon and Chionoi
Heavy: Sonny Liston Light heavy: Willie Pastrano Middle: Joey Giardello Welter: Emile Griffith Junior welter: Eddie Perkins Lightweight: Carlos Ortiz Super feather: Flash Elorde Feather: Sugar Ramos Bantam: Eder Jofre Fly: Hiroyuki Ebihara