With Essendon facing possible severe sanctions over the alleged use of banned substances, betting outlets across Australia are drawing up contingency plans to deal with the possible removal of the Bombers from betting markets.

With premiership, Brownlow Medal, top four, top eight and cross-code doubles betting to consider, the threat of Essendon being stripped of premiership points has left wagering companies preparing for major market reshuffles.

Bombers players and coach James Hird. Credit:Getty Images

Corporate bookmaking firm Betstar said it would refund bets on single premiership wagers on Essendon and says that unlike racing, there will be no deductions to any bets placed on rival teams in the premiership.

NRL-AFL doubles involving Essendon will become singles on the NRL leg only. Essendon top-four and top-eight bets will also be refunded, if the club is stripped of points.