Answer
Teófimo López, the reigning unified lightweight champion, was defeated by George Kambosos Jr. in a stunning upset on November 27, 2021. Kambosos, a relatively unknown Australian fighter, put on a dominant performance, outboxing and outclassing López throughout the fight. The victory earned Kambosos the WBA, IBF, WBO, and WBC lightweight titles, making him the undisputed champion in the division.