Given the background supplied, I doubt that a direct confrontation will accomplish the best results.
Instead, I think I'd just keep an eye on that player's matches - as discreetly as possible! - and see if I spot any Cheating. Once I do, then a quick DQ and - most important! - enter an Investigation in the Judge Center.
If the Investigation committee determines that a suspension is in order, then this player will no longer be spending his way into the good graces of the owner, at that other store…
Edited Scott Marshall (March 18, 2014 12:25:03 PM)