Question: who is the opponent on February 8, 1990?
SQL: SELECT "Opponent" FROM "2-17376313-4" WHERE "Date" = 'February 8, 1990';

Question: who is the opponent when the streak is Won 9 on April 13, 1990?
SQL: SELECT "Opponent" FROM "2-17376313-4" WHERE "Streak" = 'Won 9' AND "Date" = 'April 13, 1990';