public static int DescendingPlayerRank(PlayerModel lhs, PlayerModel rhs)
{
if (lhs == null) {
return ((rhs == null) ? 0 : -1);
} else if (rhs == null) {
return ((lhs == null) ? 0 : 1);
}
if (lhs.Rank < rhs.Rank) return 1;
if (lhs.Rank > rhs.Rank) return -1;
return 0;
}