What was the 1st leg score in the matchup with a 2nd leg of 72-89?
CREATE TABLE "second_qualifying_round" (
  "team_num1" text,
  "agg" text,
  "team_num2" text,
  "1st_leg" text,
  "2nd_leg" text
);
SELECT "1st_leg" FROM "second_qualifying_round" WHERE "2nd_leg"='72-89';