Table: masters_1957
Columns: place
player
country
score
to_par
earnings

Question: Which player has a score of 74-74-73-70=291?
SQL: SELECT "player" FROM masters_1957 WHERE "score" = '74-74-73-70=291'

Question: What is the average earnings of a United States player who had a score of 72-68-74-72=286?
SQL: SELECT AVG("earnings") FROM masters_1957 WHERE "country" = 'united states' AND "score" = '72-68-74-72=286'