Board & Card Games Stack Exchange is a question and answer site for people who like playing board games, designing board games or modifying the rules of existing board games. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I am using mtgarena for my tournament organization.

What do OMP, GWP and OGP mean? Does anyone know what they stand for?


Player  Points  OMP     GWP      OGP
1           9   33.33   100      31.11
2           6   66.67   60       69.44
3           6   44.44   75       42.22
4           6   22.22   66.67    22.22
5           3   72.22   20       80.56
6           3   50      20       53.33
7           3   33.33   0        36.11
share|improve this question
up vote 6 down vote accepted

These are percentages, used by the DCI as tie-breakers. From Section C4 of the Tournament Organizer's Handbook:

  • OMP - Opponents’ Match-Win Percentage. A player’s match-win percentage is that player’s accumulated match points divided by X times the number of rounds in which he or she competed, or 0.33, whichever is greater.
  • GWP - Game-Win Percentage. Similar to the match-win percentage, a player’s game-win percentage is the total number of game points he or she earned divided by X times the number of games played.
  • OGP - Opponents’ Game-Win Percentage. Similar to opponents’ match-win percentage, a player’s opponents’ game-win percentage is simply the average game-win percentage of all of that player’s opponents. And, as with opponents’ match-win percentage, each opponent has a minimum game-win percentage of 0.33.
share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.