Table schema:
CREATE TABLE table_name_21 (losses INTEGER, south_west_dfl VARCHAR, byes VARCHAR)

Question: 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