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_name_21 ( the_biggest_loser VARCHAR, at_home_winner VARCHAR )

### Question ###
Who won the season when Pete Thomas was the At-Home winner?

### Accurate SQL ###

SELECT the_biggest_loser FROM table_name_21 WHERE at_home_winner = "pete thomas"