[Whatever]

I have a spreadsheet with the OPRs from the 7 FTC qualifiers in MN that I would be willing to send you. It calculates OPRs slightly different - it uses a set a successive approximations, estimates the error, corrects, and tries again. When I have checked it against the published numbers it seems to come up with the same answers. I found it easier to explain to middle school students than matrix mathematics.

One major issue I have seen so far in this years FTC game is a few penalties can really play havoc on the OPRs across the tournament. For example: on the Saturday of the Burnsville tournament, 9078/9414 got an additional 190 penalty points in a match. That penalty alone moves their OPRs from the mid 20s to the mid 60s. Team 8034 had matches with both of those robots later in the day, so that penalty lowers 8034 OPR from 31 to 12 - even though they were not involved in the original match. The Sunday in Columbia Heights has a similar situation with 11270/5330 getting a 150 point boost in a match.