CREATE TABLE table_14621 ("Date" CLOB, "Opponent" CLOB, "Score" CLOB, "Loss" CLOB, "Attendance" FLOAT, "Record" CLOB)

Name the attendance for atlanta braves opponent for september 9
SELECT AVG("Attendance") FROM table_14621 WHERE "Opponent" = 'atlanta braves' AND "Date" = 'september 9'
SELECT AVG("Attendance") FROM "table_14621" WHERE "Date" = 'september 9' AND "Opponent" = 'atlanta braves'