Sandbagging

An Individual / partnership should avoid winning too many tricks above its bid. Each time an Individual / partnership wins 10 bags (cumulative through a game), that Individual / partnership receives a 100-point penalty.
EXAMPLE: Alex and Charlie bid 4 tricks and win 7, then they bid 3 and win 6, then they bid 4 and win 9. They now have 11 bags (3+3+4) and receive a 100-point penalty. The additional bag carries over. If Alex and Charlie win 9 more bags, they receive another penalty.