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_62608 ( "Year" real, "Network" text, "Play-by-play" text, "Colour commentator(s)" text, "Pregame host" text )

### Question ###
Who was the pregame host before 1992 when there was a play by play of Bob Irving?

### Accurate SQL ###

SELECT "Pregame host" FROM table_62608 WHERE "Year" < '1992' AND "Play-by-play" = 'bob irving'