In sports, a dynasty is a team or individual that dominates their sport or league for an extended length of time. Some leagues usually maintain official lists of dynasties, often as part of a hall of fame, but in many cases, whether a team or individual has achieved a dynasty is subjective. This can result in frequent topic of debate among sports fans due to lack of consensus and agreement in the many different variables and criteria that fans may use to define a sports dynasty. Merriam-Webster describes a dynasty as a "sports franchise which has a prolonged run of successful seasons". Within the same sport, or even the same league, dynasties may be concurrent with each other.