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_88 (total INTEGER, play_offs VARCHAR, league VARCHAR, player VARCHAR)

### Question ###
What mean total had a league number of 18, Richard Logan as a player, and a play-offs number smaller than 1?

### Accurate SQL ###

SELECT AVG(total) FROM table_name_88 WHERE league = 18 AND player = "richard logan" AND play_offs < 1