What rank does Rodney Marsh have?
CREATE TABLE table_21100348_15 (
    rank INTEGER,
    player VARCHAR
)
SELECT MAX(rank) FROM table_21100348_15 WHERE player = "Rodney Marsh"
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 rank does Rodney Marsh have? ### Input: CREATE TABLE table_21100348_15 (
    rank INTEGER,
    player VARCHAR
) ### Response: SELECT MAX(rank) FROM table_21100348_15 WHERE player = "Rodney Marsh"