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_1602858_1 (runner_s__up VARCHAR, tournament VARCHAR)

### Question ###
Who was the runner-up in the Memorial Tournament?

### Accurate SQL ###

SELECT runner_s__up FROM table_1602858_1 WHERE tournament = "Memorial tournament"