CREATE TABLE table_31067 ("Week of" TEXT, "Tournament" TEXT, "Champion" TEXT, "Runner-up" TEXT, "Semifinalists" TEXT, "Quarterfinalists" TEXT)

which tournament was the champion pat cash 4 6, 6 4, 6 3?
SELECT "Tournament" FROM table_31067 WHERE "Champion" = 'Pat Cash 4–6, 6–4, 6–3'
SELECT "Tournament" FROM "table_31067" WHERE "Champion" = 'Pat Cash 4–6, 6–4, 6–3'