[Ed Law]

I received some questions through PM and I decided to answer them here so others can benefit from it also.

First of all, these OPR and CCWM should not replace watching matches and gathering match statistics if your team has the human resources to do it reliably.

OPR does not predict what a team (robot and human player) can score. It is the calculated contribution by that team on average to all the matches they were involved in to their alliance partners. A team that has high OPR score means that every time they are on the field, good things happen to that alliance meaning high score. Some of the possibilities are:

1) their robot score a lot of points
2) their human player score a lot of points
3) their presence allow their alliance partners to score a lot of points which they don't normally do as well.
4) they have on average stronger partners and weaker opponents by the luck of the draw than other teams.

A low OPR is just the opposite.

CCWM is the calculated contribution to the winning margins of the matches the team was involved in. About half the teams will have negative CCWMs and if you add up all the CCWMs of all the teams in the event, it will add up to zero. A negative CCWM means the team is a liability to their partners. They may be able to score points, but they get scored on more than they score on others and it may be because of penalties also. A team with negative CCWM should not be picked as alliance partners.

A team that has high CCWM means that every time they are on the field, good things happen to that alliance and in this case it means winning by a big margin. Some of the possibilities are:

1) they score more points on others than others score on them
2) their presence allow their alliance to score more points on others than others score on them. This could be from playing defense or help pin an opposing robot so their alliance partner can score more.
3) they do not incur much penalties.
4) they have on average stronger partners and weaker opponents by the luck of the draw than other teams.

In another scenario, a team with high OPR and negative CCWM could mean that they are a liability to their partners. They probably get scored on a lot more than they score on others but their presence helped their partners to score more than they normally do. To me, it raise a red flag about their game strategy. I hope this helps.

Ed Law