What are the Opponents at the Schenectady, U.S. Tournament?
CREATE TABLE "wins_50" (
  "outcome" text,
  "date" text,
  "tournament" text,
  "surface" text,
  "partner" text,
  "opponents_in_the_final" text,
  "score_in_the_final" text
);
SELECT "opponents_in_the_final" FROM "wins_50" WHERE "tournament"='schenectady, u.s.';