CREATE TABLE table_name_86 (attendance INT, opponent VARCHAR, record VARCHAR)

What is the average attendance of the Mariners' attendance when their record was 62-64?
SELECT AVG(attendance) FROM table_name_86 WHERE opponent = "mariners" AND record = "62-64"
SELECT AVG("attendance") FROM "table_name_86" WHERE "62-64" = "record" AND "mariners" = "opponent"