CREATE TABLE table_203_382 (id DECIMAL, "date" TEXT, "opponent" TEXT, "site" TEXT, "result" TEXT)

before the jackson state loss , when was their last loss ?
SELECT "date" FROM table_203_382 WHERE "result" = 'l' AND "date" < (SELECT "date" FROM table_203_382 WHERE "opponent" = 'jackson state') ORDER BY "date" DESC LIMIT 1
SELECT "date" FROM "table_203_382" WHERE "date" < (SELECT "date" FROM "table_203_382" WHERE "opponent" = 'jackson state') AND "result" = 'l' ORDER BY "date" DESC NULLS LAST LIMIT 1