[JesseK]

What do you need your statistics to show? What will they be used for? Statistics for the sake of statistics usually means that there is some bias, hidden or invalid data, and/or bad predictions on the outcome of the statistics. In FRC, a team that plays at more than 1 regional is usually better than a team that plays at only 1 regional. In addition (as Bongle just mentioned) you have no strength of schedule weighted into any of this. Competition may be fierce with magnificent strategies and robots at one event, whereas robots at another event may barely move and the one that simply works the best wins.

When considering how to rank nation-wide OPR statistics, I had to consider the end application for the way I want to use the statistics. Right now, I want to somewhat predict every match in Atlanta based upon OPR, CCWM, and SOS statistics. So I decided to use only the data from a team's most recent regional, since many teams upgrade before Atlanta. However, if I were to see 'what robot is better' for the whole year (useful for FF picks), I would have to factor in all of a team's competitions. If the team was terrible at one regional then upgraded for the next regional and was great, that should factor in to my predictions for next year's teams' performance.