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_26 (reg_gp INTEGER, player VARCHAR, pl_gp VARCHAR)

### Question ###
What is the lowest regular GP Larry Courville, who has a PI GP smaller than 0, has?

### Accurate SQL ###

SELECT MIN(reg_gp) FROM table_name_26 WHERE player = "larry courville" AND pl_gp < 0