What year was the Guard who currently plays for the Memphis Grizzlies born?
CREATE TABLE "fiba_euro_basket_2007_squads" (
  "player" text,
  "height" real,
  "position" text,
  "year_born" real,
  "current_club" text
);
SELECT "year_born" FROM "fiba_euro_basket_2007_squads" WHERE "position"='guard' AND "current_club"='memphis grizzlies';