How many number of athletes were in round of 64 was llagostera Vives ( esp ) l 6–2, 3–6, 5–7?
CREATE TABLE "table1_17289604_38" (
  "athlete" text,
  "event" text,
  "round_of_64" text,
  "round_of_32" text,
  "round_of_16" text,
  "quarterfinals" text
);
SELECT COUNT("athlete") FROM "table1_17289604_38" WHERE "round_of_64"='Llagostera Vives ( ESP ) L 6–2, 3–6, 5–7';