Table: masters_1989
Columns: place
player
country
score
to_par

Question: When Tom Purtzer of the United States played what is the maximum score?
SQL: SELECT MAX("score") FROM masters_1989 WHERE "country" = 'united states' AND "player" = 'tom purtzer'

Question: Ben Crenshaw has what To par?
SQL: SELECT "to_par" FROM masters_1989 WHERE "player" = 'ben crenshaw'