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_20606 ( "Missouri vs." text, "Overall Record" text, "at Columbia" text, "at Opponents Venue" text, "at Neutral Site" text, "Last 5 Meetings" text, "Last 10 Meetings" text, "Current Streak" text )

### Question ###
How many times did the team achieve an overrall record of mu, 21-19?

### Accurate SQL ###

SELECT COUNT("Last 5 Meetings") FROM table_20606 WHERE "Overall Record" = 'MU, 21-19'