Stan hasn't qualified on pioints yet. He probably will qualify due to other player's results but not yet, he would have had to reach the final in Tokyo for that.
Are you sure?
I look at two sites and tried to work out a way that the could be overtaken by five players so he dropped to ninth. If either Cilic or Stan are outside the top ten they will qualify. If both are outside the top eight only one will. For both to be overtaken so that neither is in the top ten I do not think was possible so the issue becomes irrelevant? It worked out as impossible in the end to calculate as he would have to lose all games and the sharing of the points by others was critical. Live tennis ranking had the qualification cut below his score,which I tried to check, but the WTC Wikipedia site was still showing as you say that he is not yet qualified.
I gave up in the end. Usually I can see how to arrange the points for all eventualities but not this time. I suspect that the ATP are not making any more changes until after this weeks as they, like me, do not have a sophisticated enough program to work it out!
Gnome, if you have some better sources please advise. Would save me more number crunching.