Starcraft 2 Forum

Bronze Players Stuck at Zero Points
Fixed in 1.3
There is no upper or lower bound on MMR. As such, it is possible for MMR to go below the point floor. Remember that players are matched with other players who have similar MMRs, meaning that players with sub-Bronze Zero MMR will typically face opponents who also have sub-Bronze Zero MMRs. Because points have a floor of Bronze Zero (and this may not necessarily actually be zero, but rather a certain offset), and because points are compared against opponent MMR, then zero is greater than the opponent's sub-Bronze Zero MMR which means you will always be Favored. This has the effect of players winning very few or losing very many points in every match, basically anchoring them at zero points. The only way to resolve the issue is to win enough games to raise your MMR back into the positive region, and you'll know you're getting close as your points earned per game approach 12 (excluding bonus pool).