Using the Sony A77 with the 70-400G lens, I shot 633 images between the two games, using 63% of one battery. I kept the Live View screen turned in (off) and chimped through the viewfinder. I'm not sure if this uses more or less battery power. This was the first time I shot vertical with the camera. It's very natural to use with the VG since most of the important buttons are repeated with the grip and in the same spot whether you're vertical or horizontal.
I shot almost the entire game vertical and used the 12 frames per second burst mode for almost all of it.
This is what I've learned about the burst mode. It's much better than with the A55. On the first generation of camera using the burst mode (7-fps with the A33/A55 and 10 fps with the A55) the camera is shooting jpegs, and is basically in iAuto mode. The camera sets the ISO, shutter speed and aperture. I always found the camera set the ISO too low, which meant I was shooting rodeo bull-riding at ISO 100, wide open at 1/500 second. Not quite fast enough.
The burst mode on the A77 has much more control. And this isn't the final firmware for the camera either. With the new burst mode I get to set the ISO. This is key because I can kick it up to ISO800 on a dull game, control the exposure with the "Exposure Compensation" control, and the lens shoots wide open, which is how I shoot sports anyway. These small changes are huge where it counts.... at the assignment.
At today's football I thought the camera was a dream to use. I have hands the size of hockey gloves and am always hitting buttons and changing modes without knowing it. With the A77 this wasn't an issue and none of the settings changed unless I changed them. The viewfinder has no clutter over the image. All the speeds and info are along the top and bottom outside the image area. This gives you an uncluttered view of the whole frame.
The focus on the camera is great. And the follow focus is outstanding. You could get a runningback sweeping with the ball and get the entire play in focus. I know everyone says their camera will do that, but few actually will produce a series of files where you can read the brand of the helmet on every frame.
These shots are ISO 800, wide open with the 70-400G in the burst mode. Each image has been cropped in PS.