Whilst I agree with the sentiment that they should suck it up and get the flu shot for the sake of the game, there are some very sticky legal issues involved here. Firstly discrimination on the basis of religion is a big no no. Secondly the players enterprise bargaining agreement stipulates that no changes can be made to their contracts with consulting the RLPA and at this point that doesn't include mandatory vaccination. The NRL will be able to stand players down for health and safety reasons but the players involved would still be entitled to be paid. This could get real messy if both sides dig their heels in.