Question: In the round that had a 2nd leg score of 0-2, what did they score for the 1st leg?
SQL: SELECT "1st leg" FROM "2-15822113-2" WHERE "2nd leg" = '0-2';

Question: When Estudiantes was team #2, what was their agg. value?
SQL: SELECT "Agg." FROM "2-15822113-2" WHERE "Team #2" = 'Estudiantes';

Question: Who played against TSV Bayer 04 Leverkusen when they were team #1?
SQL: SELECT "2nd leg" FROM "2-15822113-2" WHERE "Team #1" = 'TSV Bayer 04 Leverkusen';

Question: Who played against Hapoel Tel Aviv when they were team #1?
SQL: SELECT "Team #2" FROM "2-15822113-2" WHERE "Team #1" = 'Hapoel Tel Aviv';