Lightest man who beat a man who beat a man etc to beat a heavyweight champion (example below)

Dejesus beat Duran beat Barkley who beat Coetzee who beat Leon Spinks who beat Ali

 

Ali lost to Berbick, who lost to Tyson, who lost to Holyfield, who lost to Toney, who drew with McCallum, who lost to Kalambay, who lost to Kalule, who lost to Leonard, who lost to Duran, who lost to De Jesus, who lost to Antonio Gomez, who lost to Ernesto Marcel, who lost to a random Bantamweight named Agustin Cedeno.

 

Jimmy Wilde beat Memphis Pal Moore who beat Eugene Criqui who beat Johnny Kilbane who beat Freddie Welsh who beat Benny Leonard who beat Jack Britton who beat Mike O'Dowd who beat Mike Gibbons who beat Greb who beat Tunney.

Bullseye!

 

Starting from Flyweight to Heavyweight:

Pongsaklek Wongjankam beat Malcolm Tuñacao
Who beat Medgoen Singsurat
Who beat Manny Pacquiao
Who beat Miguel Cotto
Who beat Sergio Martinez
Who beat Kelly Pavlik
Who beat Jermain Taylor
Who beat Bernard Hopkins
Who beat Glen Johnson
Who beat Roy Jones Jr
Who beat James Toney
Who beat Evander Holyfield
Who beat Dwight Muhammad Qawi
Who beat Leon Spinks
Who beat Muhammad Ali