The ALTA Senior Women's Day League is made up of women 55 years of age and older and plays during the Spring and Fall seasons. Each Senior Women's Day League season lasts seven weeks ending in a series of playoffs, which 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 Day Women's level (prior two seasons), Senior Women's level (from most recent past season), Senior Mixed level (from most recent past season), Sunday/Thursday Women's level (prior two seasons),Mixed Doubles level (prior two seasons). Player history in both the Sunday and Thursday leagues the same season will use the higher rating.
With so many degrees of competition, players are assured of facing off against someone of comparable ability and allows for a highly competitive match and fun tennis environment.