CREATE TABLE table_203_754 (id DECIMAL, "no." DECIMAL, "player" TEXT, "position" TEXT, "career" TEXT, "date no. retired" TEXT)

of these players , who had the longest career ?
SELECT "player" FROM table_203_754 ORDER BY "career" - "career" DESC LIMIT 1
SELECT "player" FROM "table_203_754" ORDER BY "career" - "career" DESC NULLS LAST LIMIT 1