What's Trina Gulliver's high checkout?
CREATE TABLE "women_s" (
  "player" text,
  "played" real,
  "sets_won" real,
  "sets_lost" real,
  "legs_won" real,
  "legs_lost" real,
  "100" real,
  "140" real,
  "180s" real,
  "high_checkout" real,
  "3_dart_average" text
);
SELECT "high_checkout" FROM "women_s" WHERE "player"='Trina Gulliver';