Watching DCC action between Schmidt and Gorst, at different times Schmidt placed his hand on the table and "rubbed" the cloth towards his hole. He was not cleaning/removing anything, but rather "grooving" the felt in his favor. Never really thought about it before, but how is this allowed? Must not be a violation. What would be the reaction if the opponent stepped forward and rubbed the felt in the opposite direction? Is this a common practice? I must be naive.