In 1994 the Women's Tennis Council (now called the WTA TOUR Council) adopted a new set of age eligibility rules which define the limits of participation in professional tennis tournaments for women ages 18 and younger.
The following chart outlines these new eligibility rules. The source for this information is the WTA TOUR.
WTA TOUR Age Eligibility Chart -- -----+------------+--------------+-------------+---------------+------------ | N u m b e r o f A l l o w e d E v e n t s Age | WTA Tour | ITF Futures | Grand Slams | Wild Cards | Non-Tour -----+------------+--------------+-------------+---------------+------------ 18 | unlimited | unlimited | all | WTA Tour, max | unlimited -----+------------+--------------+-------------+---------------+------------ 17 | 13 + chps | 13 + chps | all | WTA Tour, max | 4 -----+------------+--------------+-------------+---------------+------------ 16 | 10 + chps | 10 + chps | any via | 3 (no GS) | 3 | | | qualifying | | -----+------------+--------------+-------------+---------------+------------ 15 | 4 Max Tier | 8 minus # | 0 | 3 - Max of 2 | 1 | III/IV only| of WTA Tour | | into Tier | | (no chps) | events | | III/IV | -----+------------+--------------+-------------+---------------+------------ 14 | 0 | 4 | 0 | 3 ITF Futures | 1 | | | | (qualifying) | -----+------------+--------------+-------------+---------------+------------ 13 | 0 | 0 | 0 | 0 | 0 -----+------------+--------------+-------------+---------------+------------
Notes: