Re: 4/24/12 - Reds vs Giants
Also, when Votto was hit, Posey was on his feet very quickly. This is often an indicator that it may have been intentional.
When a pitcher throws at a batter or throws a purpose pitch, the catcher knows it's coming, and will react quickly to get on his feet to intercept the batter if things escalate. When a pitcher hits a batter accidentally, the catcher is also caught by surprise, and will not react as quickly.