The lineal championship histories display the divisional histories of “the man, who beat the man, who beat the man….” The first “man” in each division was a judgment call, made depending on whether or not there was an organization overseeing the divisional matchmaking. In this case, the winner of the first recorded match in said division (if this was the only divisional match on that card) determined the first champion. Otherwise, the winner of the first match between recognized top contenders (#1 vs. #2, #1 vs. #3, and rarely #2 vs. #3 — FightMatrix ratings were used as a guide) was used to determine an initial champion . The latter method was also used when champions retired, or went inactive.
Although judgment calls were necessary, it is highly doubtful that any of them affected today’s current champion. Nevertheless, we have posted the complete histories, along with notes, for each division’s lineage. The weight limits observed are a bit more “strict” than for our standard rankings to ensure that catchweight and “stay busy” fights did not interrupt the lineages. Furthermore, we reserve the right to make any retroactive changes upon discovery of errors, bad divisional info, and well-researched logical objections. If you have any objections or comments, please let us know.
Complete lineal championship histories for each division:
Heavyweight (current champion: Francis Ngannou)
Light Heavyweight (current champion: Alex Pereira)
Middleweight (current champion: Sean Strickland)
Welterweight (current champion: Islam Makhachev)
Lightweight (current champion: Islam Makhachev)
Featherweight (current champion: Alexander Volkanovski)
Bantamweight (current champion: Petr Yan)
Flyweight (current champion: Joshua Van)
Strawweight (current champion: vacant)
Women’s Featherweight+ (current champion: Cristiane Justino)
Women’s Bantamweight (current champion: Kayla Harrison)
Women’s Flyweight (current champion: Erin Blanchfield)
Women’s Strawweight (current champion: Weili Zhang)
Women’s Atomweight (current champion: Seika Izawa)

Jasmine Jasudavicius just beat Erin Blanchfield for the lineal women’s flyweight championship!
Thanks for the notice.
Gaethje is now the lineal featherweight champion
I guess he would be if the Topuria fight was at 145.
When will, featherweight and lightweight Lineal will change , if never go back to former divisions
When we have a proper #1 vs #2 or #1 vs #3 fight. I suppose Volkanovski vs Lopes 2 qualifies for the Featherweight reset.
Then why it’s not reset yet