ConorMcGregorbelieveshewillknockoutFloydMayweatherinsidetworoundsbutisreadyforallscenarioswhenthetwofightersclashintheireagerlyanticipatedsuperfightnextweek.Iri
Muhammad Ali's fight gloves and a box of cigars signed by the Cuban revolutionary leader Fidel Castro are among some of the highlights in an auction of memorabilia steeped in sporting history.
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