CREATE TABLE table_204_469 (id DECIMAL, "coach" TEXT, "years" TEXT, "seasons" DECIMAL, "wins" DECIMAL, "losses" DECIMAL, "ties" DECIMAL, "pct" DECIMAL)

who was the last coach to only have 1 loss ?
SELECT "coach" FROM table_204_469 WHERE "losses" = 1 ORDER BY "years" DESC LIMIT 1
SELECT "coach" FROM "table_204_469" WHERE "losses" = 1 ORDER BY "years" DESC NULLS LAST LIMIT 1