(a) if, in the
referee's opinion, a combatant is exhausted or injured to such an extent as to
be unable to defend himself, herself or themself or to continue the contest,
or
(b) if a disruption occurs of such a kind as, in the
referee's opinion, warrants stopping the contest, or
(c) in circumstances of
a kind specified by the rules or prescribed by the regulations for the
purposes of this section.
(1A) Without limiting the way in which a request
may be made for the purposes of subsection (1) (a1), the request may be made
in a way that was agreed before the contest between the referee and the
trainer or second, including by way of a signal.