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_12125069_2 (losing_pitcher VARCHAR, winning_pitcher VARCHAR)

### Question ###
Who is the losing pitcher when the winning pitcher is roy oswalt?

### Accurate SQL ###

SELECT losing_pitcher FROM table_12125069_2 WHERE winning_pitcher = "Roy Oswalt"