CREATE TABLE "doubles_15_8_7" (
  "outcome" text,
  "date" text,
  "surface" text,
  "partner" text,
  "opponents" text,
  "score" text
);

Question: Name the date for zi yan jie zheng opponent
SQL: SELECT "date" FROM "doubles_15_8_7" WHERE "opponents"='zi yan jie zheng';

Question: Name the partner for 14 october 2007
SQL: SELECT "partner" FROM "doubles_15_8_7" WHERE "date"='14 october 2007';

Question: Name the partner for opponents of alexandra dulgheru magdaléna rybáriková
SQL: SELECT "partner" FROM "doubles_15_8_7" WHERE "opponents"='alexandra dulgheru magdaléna rybáriková';

Question: Name the opponents for 24 july 2011
SQL: SELECT "opponents" FROM "doubles_15_8_7" WHERE "date"='24 july 2011';