The last of those challenger titles drops off after the AO cut off if it is the same rules as last year as I remember it. The final week to count was Tour finals week, no?
He has a M15 title and RU to drop off as well, though.
I think you're probsbly right, wolf. I had in mind there was something different about the last Aus Open entry cut-offs, that they were earlier than the traditional Slam ones.