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_20 ( wins INTEGER, tournament VARCHAR, events VARCHAR )

### Question ###
How many wins were in the Masters Tournament with less than 15 events?

### Accurate SQL ###

SELECT MAX(wins) FROM table_name_20 WHERE tournament = "masters tournament" AND events < 15