CREATE TABLE table_63287 ("Week" FLOAT, "Date" CLOB, "Opponent" CLOB, "Result" CLOB, "TV Time" CLOB, "Attendance" CLOB)

What week was the result of l 38 21?
SELECT MAX("Week") FROM table_63287 WHERE "Result" = 'l 38–21'
SELECT MAX("Week") FROM "table_63287" WHERE "Result" = 'l 38–21'