Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_6163 ( "Round" real, "Pick #" real, "Overall" real, "Name" text, "Position" text, "College" text )

### Question ###
What is the average round that the player from USF was picked in when his draft pick number was less than 24?

### Accurate SQL ###

SELECT AVG("Round") FROM table_6163 WHERE "College" = 'usf' AND "Pick #" < '24'