Lineal championship

In combat sports where champions are decided by a challenge, the lineal championship of a weight class is a world championship title held initially by an undisputed champion and subsequently by a fighter who defeats the reigning champion in a match at that weight class. In professional boxing, the lineal champion is informally called "the man who beat the man". Champions recognized by sanctioning bodies such as the World Boxing Association (WBA) or World Boxing Council (WBC), or the Ultimate Fighting Championship (UFC) may vacate their title voluntarily, or be stripped of the title for breaching the sanctioning body's regulations or contracts. There will thus be a breach of continuity in the list of sanctioned champions which the lineal championship is intended to prevent. However, there is no single canonical list of lineal champions at any weight class, because there is no agreed upon method of determining the starting point for each lineage and conflicting opinions on what to do when the current champion retires or moves to a different weight class, although there is agreement that any stripping of a title be discounted.

The concept of a lineal champion was developed by boxing fans dissatisfied by the tendency of each of the various sanctioning bodies (WBC, WBA, IBF, etc.) to recognize different champions, and in particular to strip a champion of his title for refusing to fight its top-ranked contender. Prior to the 1970s, this rarely happened; the National Boxing Association (NBA) and the New York State Athletic Commission (NYSAC) sometimes recognized different champions, but there was usually only a short interval before one champion defeated the other. In this era, a title vacancy was generally filled by having a single-elimination tournament box-off between two or more top-ranked contenders. The lineal championship is intended as a return to that era. Several top boxers have specified holding the lineal championship as a personal accomplishment (e.g. Lennox Lewis) or goal (e.g., Nate Campbell).

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