After months of trying, i finally did it
I've been playing the ITST mod Federer-Murray matchup for a while and loving it. It has been a real challenge beating lvl 9 and 10 incredible difficulty, but with the proper strategy I realised it's possible.
I just attacked easy balls, defended well and topspinned everything into Murray's backhand, and sometimes he sends back easy dropshots. I used serve + rally preview. I'll try to beat it again and make a video of it this time !