If you look at the probability just from the 100 BPI average, running 820 seems to be a serious outlier. With a 100 BPI, he is roughly 36% to run 100 or more from the current shot. 800 is that to the eighth power, and 820 or more is a 1 in 3833 chance. I don't think he had anywhere near that many innings in the current series of attempts. He plays at a rate of about 200 balls per hour, and that would average two attempts per hour.
I'm not questioning that the run happened, I'm just saying that the usual probability calculations don't add up, so maybe there is some psychology or something else going on.