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_73146 ( "Tournament" text, "Also currently known as" text, "City" text, "Country" text, "Court surface" text, "Defending champion" text )

### Question ###
How many tournaments are also currently known as the hp open?

### Accurate SQL ###

SELECT COUNT("Country") FROM table_73146 WHERE "Also currently known as" = 'HP Open'