Marat is better physically than he was the previous times he's played Robby. He's the perennial dark-horse - he can come out of nowhere and beat players you wouldn't expect. But he currently has a 3 match losing streak and hasn't won in 2 months, and has no confidence in the tank.
Robby is coming into this match with his first title in 4 years - big confidence boost. His last win turned his year around, went 27-9, and finished the year at a career-high ranking. But Robby has had a real good week or maybe a few good weeks in a row in the past, then will go on to lose in the 1st Round several weeks in a row. Who knows what this new title will do for him now.
I think this match will depend on how tired Robby is and which Marat shows up. I say the match will be 3 sets, the winner is a toss-up.