undercard

The definition of an undercard is a boxing event before the main match.

(noun)

An example of an undercard is a match between two lesser known boxers before a heavy weight championship match.

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See undercard in Webster's New World College Dictionary

noun

Boxing the match or matches before the main event

See undercard in American Heritage Dictionary 4

noun
The event or events coming before and supporting the main event, as of boxing matches.
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