CREATE TABLE "other_results" (
  "position" text,
  "team_num1" text,
  "agg" text,
  "team_num2" text,
  "1st_leg" text,
  "2nd_leg" text
);

Question: How many positions correspond to a 1-3 1st leg?
SQL: SELECT COUNT("position") FROM "other_results" WHERE "1st_leg"='1-3';