Question: What is the 1st leg with Team 2 Lyon?
SQL: SELECT "1st leg" FROM "2-18210406-4" WHERE "Team 2" = 'Lyon';

Question: Which team is Team 1 with a Team 2 being Sporting CP?
SQL: SELECT "Team 1" FROM "2-18210406-4" WHERE "Team 2" = 'Sporting CP';

Question: What is the second leg for Team 1 Servette?
SQL: SELECT "2nd leg" FROM "2-18210406-4" WHERE "Team 1" = 'Servette';