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_29163303_1 ( partner VARCHAR, year VARCHAR, surface VARCHAR )

### Question ###
Who was Bob Bryan's partner/s on a hard surface in 2003?

### Accurate SQL ###

SELECT partner FROM table_29163303_1 WHERE year = 2003 AND surface = "Hard"