What is an undercard in boxing?

Answer 1

The undercard, or preliminary matches, consists of preliminary bouts that occur before the headline or "main event" of a particular boxing, professional Wrestling, horse racing, auto racing, or other sports event. (In auto racing, however, the term "support race" occurs more commonly.) Typically, promoters intend the undercard to provide fans with an opportunity to see up-and-coming fighters or fighters not so well-known and popular as their counterparts in the main event. The undercard also ensures that if the main event ends quickly fans will still feel that they received sufficient value for the price of their admission.