Who was the opponent when Devin Gardner was the player?
CREATE TABLE table_28313 (
    "Rank" real,
    "Player" text,
    "Year" real,
    "Opponent" text,
    "Passing yards" real,
    "Rushing yards" real,
    "Total offense" real
)
SELECT "Opponent" FROM table_28313 WHERE "Player" = 'Devin Gardner'
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: Who was the opponent when Devin Gardner was the player? ### Input: CREATE TABLE table_28313 (
    "Rank" real,
    "Player" text,
    "Year" real,
    "Opponent" text,
    "Passing yards" real,
    "Rushing yards" real,
    "Total offense" real
) ### Response: SELECT "Opponent" FROM table_28313 WHERE "Player" = 'Devin Gardner'