Why are Opens random pairings?

[Ron Ortiz]

Event: Throughout this Rulebook, there is reference to “event” or “events.” Wherever this term is used, it is intended to refer to two types of drag racing activities: (1) NHRA events, which are those events that NHRA conducts. These include but are not limited to events such as NHRA Camping World Drag Racing Series events, NHRA Lucas Oil Drag Racing Series events, National Opens, and the like; and (2) drag racing events conducted at NHRA member tracks which NHRA does not conduct but that are conducted in accordance with NHRA Rules.