CREATE TABLE table_28309 ("Rank" FLOAT, "Player" TEXT, "Year" FLOAT, "Opponent" TEXT, "Passing yards" FLOAT, "Rushing yards" FLOAT, "Total offense" FLOAT)

Who was the opponent when there was 117 rushing yards?
SELECT "Opponent" FROM table_28309 WHERE "Rushing yards" = '117'
SELECT "Opponent" FROM "table_28309" WHERE "Rushing yards" = '117'