The terms and phrases used on Bass Rankings
Event: a single- or multiple-day tournament or event.
Threshold: a minimum number of qualifying events that an angler must have participated in to be included in the rankings. For example, if we are interested in angler rankings for only the calendar year 2011 and set the threshold at 6, an angler must have fished at least 6 events in 2011 to be included in the results. Threshold is comparable to plate appearances in baseball, where a certain minimum number must be reached for the player's skill to be reliably assessed.
Decreasing the minimum-event threshold will favor anglers who've fished a small number of tournaments with great success or luck. Increasing the threshold will favor anglers with long-term, consistent success.