CREATE TABLE table_204_197 (id DECIMAL, "date" TEXT, "time" TEXT, "opponent#" TEXT, "site" TEXT, "tv" TEXT, "result" TEXT, "attendance" DECIMAL)

who was the last opponent the texas tech team faced in 1993 ?
SELECT "opponent#" FROM table_204_197 ORDER BY "date" DESC LIMIT 1
SELECT "opponent#" FROM "table_204_197" ORDER BY "date" DESC NULLS LAST LIMIT 1