^I disagree. Duckworth has played a much greater percentage of his matches on clay. TA should take surface ability more into account with these special wild cards. At this rate, Millman will be front and centre for the US Open wild card. I think that would be fair and give Australia a better chance of another main draw win. But obviously results between now and then could make a big difference too.
I would hope Millman be able to make the US Open main draw directly. Duckworth has played more matches on the clay but have the results been good enough? They have been ok but to me it doesn't suggest that he has a big advantage on te surface to ignore the huge ranking difference.
Yeah, it's also possible that they'll just choose Krygios instead.