I know they have a rule and that the champion is required to defend against the mandatory. But I dont know the time-frame.
In WBA the timeframe normally is to for the champion to make a mandatory within 6 months. I believe WBC is quite similar. WBA has exceptions when the champion unifies and becomes a 'superchampion'. Then there is 18 (I think) months between required mandatories.
WBO has no stipulated requirements.
In WBA the timeframe normally is to for the champion to make a mandatory within 6 months. I believe WBC is quite similar. WBA has exceptions when the champion unifies and becomes a 'superchampion'. Then there is 18 (I think) months between required mandatories.
WBO has no stipulated requirements.

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