what is the difference in yards averaged between cecil moore and raymond philyaw ?
CREATE TABLE table_203_8 (
    id number,
    "player" text,
    "rec." number,
    "yards" number,
    "avg." number,
    "td's" number,
    "long" number
)
SELECT (SELECT "yards" FROM table_203_8 WHERE "player" = 'cecil moore') - (SELECT "yards" FROM table_203_8 WHERE "player" = 'raymond philyaw')
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: what is the difference in yards averaged between cecil moore and raymond philyaw ? ### Input: CREATE TABLE table_203_8 (
    id number,
    "player" text,
    "rec." number,
    "yards" number,
    "avg." number,
    "td's" number,
    "long" number
) ### Response: SELECT (SELECT "yards" FROM table_203_8 WHERE "player" = 'cecil moore') - (SELECT "yards" FROM table_203_8 WHERE "player" = 'raymond philyaw')