Have a look at this. This is a video I did from patch 1.09. Foot marks were live and happening as the game progressed.
Wow! this must have been in before I bought AOIT because I've never seen it like this in AOIT since I bought the game, I hope they hurry up and get something like this (or better) back in AOIT, it looks miles better than what we currently have, this looks closer to how the clay courts looked in GST2 which is a good thing as it looks far more realistic with the surface forever changing.
I don't use the clay courts as they are currently because I feel as though I'm just playing on an orange hard court as it looks totally wrong without the various effects throughout a match, hopefully along with the upcoming sound improvements the graphics of both the clay & grass courts can get upgraded (with more/better detail) somewhat, fingers crossed.
If Big Ant can get these things sorted along with continuing to fine tune the gameplay/animations etc. AOIT could really turn into something quite special I feel, just going on the support the game has had so far.. I'm actually pretty optimistic Big Ant can do this and take the game to the next level.