Offline
That acronym will never get old.
Group A: Djokovic, Murray, Berdych, Tsonga
Group B: Federer, Ferrer, Del Potro, Tipsarevic
I think Gasquet and Almagro are the two backups. That's important because you have a Djokovic who has his mind on his father's health and Tipsarevic who got retried with dizziness against Janowicz. Okay, so that was probably a "I know I'm going to lose, so screw it" action, but it could be true.
Group A is clearly where the major competition is. I'll go with Murray and Berdych there. For Group B, I think it's Federer and Del Potro.
Semis: Del Potro d. Murray, Federer d. Berdych
Final: Del Potro d. Federer
Offline
Well, I got 3 of the 4 semi-finalists correct and one of the finalists.
Federer v. Djokovic part 29! The last time they played on indoor hard was in the 2010 WTFs and Federer won. Djokovic isn't the same player he was then. I think I'm going to have to give it to Federer.