private void ClearOutPreviousNemesis(int nemesisId, ApplicationUser currentUser)
{
var playersToUpdatePreviousNemesis = _dataContext.GetQueryable<Player>()
.Where(p => p.PreviousNemesisId == nemesisId)
.ToList();
foreach (var player in playersToUpdatePreviousNemesis)
{
player.PreviousNemesisId = null;
_dataContext.Save(player, currentUser);
}
}