CREATE TABLE table_name_21 (losses INTEGER, south_west_dfl VARCHAR(255), byes VARCHAR(255))
Which Losses have a South West DFL of branxholme-wallacedale, and less than 2 Byes?
    
SQL: SELECT AVG(losses) FROM table_name_21 WHERE south_west_dfl = "branxholme-wallacedale" AND byes < 2