The Broncos were upended 27-13 by the unbeaten Murdoch McKay Clansmen on Friday in Transcona.
Beaver Brae falls to 3-2 on the season, whiel Murdoch McKay leads the division with a perfect 5-0 mark.
The Broncos now face the Steinbach Sabres on Friday
The expansion team is still looking for its first win of the season after dropping a 20-15 decision to Dryden last week.