As much as I was hoping Na Li would win the match I kinda felt bad for Azarenka when she lost her composure at the end of the second set. She was throwing her racket, screaming at she just looked so disappointed. I didn't know that Azarenka was such an emotional player until I watched this match. Keeping her cool and not letting bad calls get to her will come with experience. She would also double faulted on critical points.
I'm sure she was having deja vu with the other finals she lost, and that probably just made things worse for her.