San Joaquin Challenge Cup

The San Joaquin Challenge Cup also called the Stockton Challenge Cup. was a men's and women's hard court tennis tournament founded in 1951. The tournament was organised by the Stockton Parks & Recreation Department in association with the Northern California Tennis Association and was played on outdoor hard courts at the Oak Park Tennis Center, Stockton, California, United States until 1978.

The event were part ILTF North America Circuit a sub circuit of the ILTF World Circuit until 1972 then became part of the ILTF Independent Tour until it was downgraded from the senior worldwide circuit.

History
In 1951 the San Joaquin Challenge Cup its official name, also known as the Stockton Challenge Cup was established at Stockton, California United States. In 1957 the edition was played in Stockton up to the semi finals stage in that location, but then the scheduled finals were delayed by three weeks and were played in Palo Alto. The tournament was organised by the Stockton Parks & Recreation Department and approved as an vent by the Northern California Tennis Association, and was played on outdoor hard courts at the Oak Park Tennis Center, Stockton, California, United States until 1978. The tournament ceased to be part of the senior ILTF North America Circuit in 1978, however the event in one form or another was still being held up to 2018 as the Stockton Challenge Cup Open.

Men's singles
(incomplete roll)

Women's singles
(incomplete roll)