It seems there seems to be some confusion as to what sandbagging is.
As in the just-posted story, where the 6 was "beaten easily by a 3". Seems to me that, if the 3 goes around "easily beating" higher level players, I don't see much sandbagging going on. Sandbagging implies hiding one's true speed; that doesn't seem to be the case here.
There was an earlier story about a 3 running the table -- "she even made two bank shots during her run". Would you expect a *good* player to have to make two bank shots when running out a table? Hell, do you expect that the good player would even be a good bet to make two bank shots on a POS bar table? Or, perhaps, the 3 just got on a roll, strung a few good shots together, got a bit of luck by making a couple of bank shots that she wouldn't regularly make, and got an improbable table run? (Not to mention that a "sandbagger" wouldn't run a table -- what do you think, she sandbagged for years to get down to a 3, all to culminate in a single match against you, where she let it all out, and showed her true speed?)
Not to say that there isn't sandbagging going on in the APA -- there is, and it is a definite problem. These are just very poor examples of such...
FWIW...