CREATE TABLE "singles_19_finals_15_titles_4_runners_up" (
  "outcome" text,
  "year" real,
  "championship" text,
  "surface" text,
  "opponent_in_the_final" text,
  "score_in_the_final" text
);

Question: Name the number of year for 6–3, 6–2 hard surface
SQL: SELECT COUNT("year") FROM "singles_19_finals_15_titles_4_runners_up" WHERE "score_in_the_final"='6–3, 6–2' AND "surface"='Hard';

Question: Name the surface for philadelphia
SQL: SELECT "surface" FROM "singles_19_finals_15_titles_4_runners_up" WHERE "championship"='Philadelphia';

Question: Name the championship for clay and corrado barazzutti
SQL: SELECT "championship" FROM "singles_19_finals_15_titles_4_runners_up" WHERE "surface"='Clay' AND "opponent_in_the_final"='Corrado Barazzutti';

Question: Name the year for clay for boston and guillermo vilas
SQL: SELECT "year" FROM "singles_19_finals_15_titles_4_runners_up" WHERE "surface"='Clay' AND "championship"='Boston' AND "opponent_in_the_final"='Guillermo Vilas';

Question: Name the total number of opponent in the final for 6–2, 6–1, 6–3
SQL: SELECT COUNT("opponent_in_the_final") FROM "singles_19_finals_15_titles_4_runners_up" WHERE "score_in_the_final"='6–2, 6–1, 6–3';