Table: blue_jays_1981_season
Columns: date
opponent
score
loss
record

Question: Who lost when the mariners played on September 12?
SQL: SELECT "loss" FROM blue_jays_1981_season WHERE "opponent" = 'mariners' AND "date" = 'september 12'

Question: On September 7 what was the record?
SQL: SELECT "record" FROM blue_jays_1981_season WHERE "date" = 'september 7'

Question: Who plays on the date september 29?
SQL: SELECT "opponent" FROM blue_jays_1981_season WHERE "date" = 'september 29'