How many different matchup/results appear in San Diego, California?
CREATE TABLE table_23718905_6 (matchup_results VARCHAR, city VARCHAR)
SELECT COUNT(matchup_results) FROM table_23718905_6 WHERE city = "San Diego, California"
### Context: CREATE TABLE table_23718905_6 (matchup_results VARCHAR, city VARCHAR) ### Question: How many different matchup/results appear in San Diego, California? ### Answer: SELECT COUNT(matchup_results) FROM table_23718905_6 WHERE city = "San Diego, California"