I dont understand how you can sandbag in a GI tourney. I mean dont you compete at what ever belt you are ie white..blue..purple. If an instructor hasnt promoted a guy then thats not his fault. I have not had any problems with sandbagging in the GI divisions. The No GI division is a different story. My first ever NO GI tourney I had been training for a total of 3 months so I enter the beginner class. I was expecting to go up against guys new like myself. First match I go against a guy and I notice that he has caulis from hell (both ears) and came right out with a wrestling stance. Needless to say I got subbed and he went on to sub all his opponents and win the division. Come to find out from some other guys that knew him he had wrestled for years including college. So when I asked them "why is he competing in the beginner division then"? Thier response was "well he's still a white belt in BJJ".