CREATE TABLE table_63988 ("Team #1" TEXT, "Agg." TEXT, "Team #2" TEXT, "1st leg" TEXT, "2nd leg" TEXT)

What was the 1st leg score in the matchup with a 2nd leg of 72-89?
SELECT "1st leg" FROM table_63988 WHERE "2nd leg" = '72-89'
SELECT "1st leg" FROM "table_63988" WHERE "2nd leg" = '72-89'