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_34548 ( "Date" text, "Tournament" text, "Tier" text, "Surface" text, "Opponent in the final" text, "Score" text )

### Question ###
When David McNamara was the opponent in the final, what was the tier?

### Accurate SQL ###

SELECT "Tier" FROM table_34548 WHERE "Opponent in the final" = 'david mcnamara'