The ALTA Women's Senior Doubles League is open to women 45 years of age and older and plays during the Summer season. Each Women's Senior season lasts seven weeks plus two rounds of playoffs that lead to the City Championship at each playing level.
Teams are formed through individual effort at public facilities, neighborhood courts, and private clubs. Playing levels include, from advanced to novice, AA, A, B, and C. Within each level, there are up to 9 flights.
The prior season/year performance of the team and previous levels of its players determine team placement within the levels and flights. Individual players' levels are determined by their prior levels from the following leagues in this order: Senior Women's level (from most recent past season), Sunday/Thursday level (prior two seasons), Senior Mixed level (from most recent past season), Mixed Doubles level (prior two seasons), Senior Day Women's level (prior two seasons). If player history in both the Sunday and Thursday leagues, the same season will use the higher rating.
The many levels of competition help assure players are matched against pairs of comparable ability and allows for a highly competitive match and fun tennis environment.