Just read through this again, awesome stuff. And now a new title to add on
I feel embarrassed to ask this, but does an indoor hardcourt event (ie. stockholm) count as a hardcourt title? or do they only class outdoor hardcourts in that category.
Yes, title #64 is a great achievement! He is now joint 4th in the all-time title race. But in terms of this thread, perhaps what is more important is that he is reaching closer to the open era record for outdoor tournament wins and hard court tournament wins.
In answer to your question, indoor hardcourt does count as a hardcourt title. The only occasions on which indoor tournaments don't count towards the hardcourt tally were the occasions on which he won on carpet (twice). The ATP don't hold any tournaments on the carpet surface now though, so indoor titles do add to the hardcourt count.
Interestingly, Federer had most of his very early success indoors. In fact the first 5 finals that he reached were all indoors! Also for those who are interested, Stockholm 2010 is his 14th indoor title.