Robin is making some small misstakes.
Hes FAAAAAAR from getting out played.
So as long he focus a little bit more this could get interesting.
nope
you have to understand tennis 
he lost the first set as I said ...he'll break down more and more as it progresses
why ? 
cause Fed puts pressure on you 
and Robin is revved up to the max since it has started ( 130 mph second serves ) and has run out of gears 
Roger is getting better and will shift in a higher gear while missing less and less 
I predict 3 sets 
second : 6-3 or 6-2..third the same 
best case scenario Robin takes him to tie break and still loses although I doubt he'll manage that