| San Joaquin Challenge Cup | |
| Type: | defunct |
| Tour: | ILTF World Circuit (1951–72) ILTF Independent Tour (1973–75) |
| Location: | Palo Alto, California United States Stockton, California, United States |
| Venue: | Oak Park Tennis Center |
| Surface: | Hard (outdoors) |
The San Joaquin Challenge Cup[1] also called the Stockton Challenge Cup.[2] was a men's and women's hard court tennis tournament founded in 1951.[3] 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.[4]
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.[4]
In 1951 the San Joaquin Challenge Cup its official name,[5] 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.[6] The tournament was organised by the Stockton Parks & Recreation Department and approved as an vent by the Northern California Tennis Association,[4] and was played on outdoor hard courts at the Oak Park Tennis Center,[7] Stockton, California, United States until 1978.[4] 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.[8]
(incomplete roll)
| Year | Location | Winners | Runners-up | Score |
|---|---|---|---|---|
| ↓ ILTF World Circuit ↓ | ||||
| 1955 | Stockton |  Fred Hagist | 6–1, 5–7, 6–4. | |
| 1957 | Palo Alto | Tom Brown (2) | 6–4, 6–3. | |
| 1958 | Stockton | Christopher Crawford | 2–6, 6–3, 6–0. | |
| 1960 | Stockton | Butch Krikorian[9] | Bill Hoogs Jr. | 6–2, 6–4. |
| 1962 | Stockton | William "Bill" G. Demas[10] | 8–10, 6–3, 6–4. | |
| 1964 | Stockton | Dean Penero[11] | 7–5, 6–4. | |
| 1965 | Stockton | Eugene Cantin[12] | 1–6, 6–4, 6–2 | |
| 1966 | Stockton | Eugene Cantin (2) | Larry Riggs[13] | 6–3, 6–3. |
| 1967[14] | Stockton | Tom Kiss[15] | Tom Muench | 6–2, 7–5. |
| 1968[16] | Stockton | Eugene Cantin (3) | Roger Cooper | 6–3, 6–2. |
| ↓ Open era ↓ | ||||
| 1969 | Stockton | Eugene Cantin | 11–9, 6–3. | |
| 1970 | Stockton |  Marcelo Lara | Eugene Cantin | 6–8, 6–4, 6–3. |
| 1971 | Stockton | Joaquín Loyo-Mayo |  Alex Olmedo | 8–6, 5–7, 8–6. |
| 1973 | Stockton |  Robyn Ray[17] | Bob Potthast[18] | 3–6, 6–4, 7–6. |
| ↓ ILTF Independent Tour ↓ | ||||
| 1978[19] | Stockton | Dick Metz | Bill Harper | 7–6, 5/1, 6–4. |
| For the successor event see Stockton Challenger | ||||
(incomplete roll)
| Year | Location | Winners | Runners-up | Score |
|---|---|---|---|---|
| ↓ ILTF World Circuit ↓ | ||||
| 1955 | Stockton | Mary Ann Mitchell | Gertrude Easton | 6–4, 6–0 |
| 1967[20] | Stockton | Susan Anawalt | Marlene Muench | 6–2, 6–4 |
| ↓ Open era ↓ | ||||
| 1970 | Stockton | Sharon Walsh | Barbara Downs | 6–2, 6–3 |
| 1971 | Stockton | Tory Ann Fretz |  Karen Krantzcke | 6–3, 5–7, 6–3 |
| 1973 | Stockton | Kate Latham | Cathy Anderson | 6–4, 6–2 |
| For the successor event see Stockton Challenger | ||||