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It is unclear when or if the non-title bout between McGregor (22-6) and Chandler (23-8) will occur. The nature of the injury has not been made public.
Debutant Puja eked out a split-decision win over Brazil's Rayanne dos Santos in the straw-weight (52kg) bout.
The 35-year-old laid her gloves between her bantamweight and featherweight belts on the octagon floor, bringing an end to a sensational run that saw her become the first woman to hold two UFC titles
Stepping up a weight class in an effort to become champion in two divisions, featherweight champ Volkanovski put on a tremendous display at UFC 284, but came up just short.
Theodorou, who died on Sunday, fought in 22 bouts in Mixed Martial Arts, including 11 (8-3 record) in the UFC in the middleweight division.
The judges rewarded Nunes with a unanimous decision victory that saw her add the bantamweight belt to her featherweight title as she regained her status as reigning champion in two weight classes.
Poland's Wlodarczyk, who became the first woman to win an individual Olympic athletics event three times in a row in Tokyo last year, said the thief was a "foreigner."
McGregor was taken to a police station where he was later charged and released on bail, the report added.
Referee Herb Dean stopped the bout on the instructions of the doctor at the end of the first round.
Amanda Nunes blasted Megan Anderson en route to an easy first-round submission win to defend her featherweight title, and Petr Yan lost his bantamweight belt to Aljamain Sterling when he was disqualified for an illegal knee.
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