Table: rangers_season_21
Columns: game
october
opponent
score
decision
record

Question: Who was the opponent with the record of 4-0-0?
SQL: SELECT "opponent" FROM rangers_season_21 WHERE "record" = '4-0-0'

Question: What was the score of the game on October 20 with a decision of Lundqvist?
SQL: SELECT "score" FROM rangers_season_21 WHERE "decision" = 'lundqvist' AND "october" = '20'

Question: What game is the first with the Pittsburgh Penguins the opponent?
SQL: SELECT MIN("game") FROM rangers_season_21 WHERE "opponent" = 'pittsburgh penguins'