These fruit are from a Georgia bell tree. The tree produced loads of peaches. But some of peaches have this. I noticed some of the fruits have patch of yellow/brown discoloration since the fruit were very small, they eventually developed into this.
I have other three yellow peach tree nearby, none of them has this. I tried to google it, didn’t find anything.
I had a similarly looking problem on my white peaches (Strawberry Free), which ripened in late June in CA. I think this may be caused by one of the pathogens associated with Ripe Fruit Rot, http://www.ipm.ucdavis.edu/PMG/r602100211.html. In my case, I suspect that this problem may be related to the peaches being attacked by earwigs.
This definitely looks different than what I had on my peaches. In my case, the rot spread into the inner part of the fruit, while the scarring on your peaches seems to be limited to the surface.
I looked up scab before I posted, also noticed the spot. Mine was never spotted. It started as a solid patch of discoloration when the fruit was very small, eventually became this.
What’s interesting is this only happen to this white peach tree, the other yellow peach tree nearby does not have this.
Besides the spots or not it is pretty much the same thing. So its either peach scab or a related disease, and I would treat it like peach scab and it will probably not recur next year. Scab is highly variety-sensitive, I have trees side by side that are worlds apart w.r.t. scab damage.