CREATE TABLE table_28663 ("Week" FLOAT, "Date" CLOB, "Kickoff" CLOB, "Opponent" CLOB, "Final score" CLOB, "Team record" CLOB, "Game site" CLOB, "Attendance" FLOAT)

Name the least week for l 26 42
SELECT MIN("Week") FROM table_28663 WHERE "Final score" = 'L 26–42'
SELECT MIN("Week") FROM "table_28663" WHERE "Final score" = 'L 26–42'