Question: What were the results of the womens u20 when the mens 45 was  Sunwest Razorbacks def Northern Eagles?
Schema: create table table_16724844_1 (womens_u20 varchar, mens_45 varchar, PRIMARY KEY (womens_u20))
SQL: select womens_u20 from table_16724844_1 where mens_45 = "sunwest razorbacks def northern eagles"