CREATE TABLE table_16724844_1 (womens_u20 VARCHAR(255), mens_45 VARCHAR(255))
What were the results of the womens u20 when the mens 45 was  Sunwest Razorbacks def Northern Eagles?
    
SQL: SELECT womens_u20 FROM table_16724844_1 WHERE mens_45 = "SunWest Razorbacks def Northern Eagles"