Got mine from B&H last week and tested it on fast moving dog agility and disc dogs. Very impressive camera!
All shots were with a 200 f/2 shot wide open or at 2.2.
Second shot is ISO 4000. Note how it tracked the dog and not the person walking in front for a split second.
For inside shots (bottom two) I used:
TV 1/1250s
Auto ISO
AI servo
Case 4
Single point selection with 4 point expansion
AI servo 1st image priority set to equal
AI servo 2nd image priority set to focus
For outside shot (first image) I used:
AV
ISO fixed (200 or 400)
AI servo
Case 6
61 point auto switching with first point selected.
ITR on