Conor McGregor makes gambling jibe to Floyd Mayweather in subdued press conference

Conor McGregor accused Floyd Mayweather of having a "big-time gambling problem" as the two faced off ahead of Saturday's fight in Las Vegas.

The pair were unexpectedly relaxed as they saw each other for the final time before Friday's weigh-in, in contrast to the tense grand arrival on Tuesday and the foul-mouthed exchanges on the earlier press tour.