Answer
Claressa Shields, the two-time Olympic gold medallist, has held the undisputed light middleweight championship since March 13, 2021, unifying the WBC, IBF, and WBA titles. She successfully defended her titles against Ema Kozin in February 2022, knocking her out in the sixth round. Shields has also won the WBO title, making her the undisputed champion in the division.