What exactly is sandbagging?
It is when someone far more experienced competes in a division that is meant for beginners. It is a practice that is looked down upon by the entire BJJ community, as it mainly goes against the spirit of testing yourself each time you go out there.
I believe if you are not trying to push yourself to your fullest potential, and only want to rack up wins against less experienced people, you are cheating yourself.
Do yourself, and your potentials opponents a favor and don't sandbag.
Now no gi sparring between BJ Penn, and Leo Veira.