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_24348134_3 (tournament_winner VARCHAR, regular_season_winner VARCHAR)

### Question ###
List the number of tournament winners when iona , siena & niagara won in the regular season.

### Accurate SQL ###

SELECT COUNT(tournament_winner) FROM table_24348134_3 WHERE regular_season_winner = "Iona , Siena & Niagara"