CREATE TABLE "singles_10_3_7" (
  "outcome" text,
  "tournament" text,
  "surface" text,
  "opponent" text,
  "score" text
);

Question: Which opponent used a grass surface?
SQL: SELECT "opponent" FROM "singles_10_3_7" WHERE "surface"='grass';

Question: Which tournament had a score of  6–7 (0–7) , 6–2, 4–6?
SQL: SELECT "tournament" FROM "singles_10_3_7" WHERE "score"='6–7 (0–7) , 6–2, 4–6';