<p>These are percentages, used by the DCI as <a href="http://www.wizards.com/dci/downloads/tiebreakers.pdf">tie-breakers</a>. From Section C4 of the <a href="http://www.wizards.com/dci/downloads/TOHndBk_Feb_5_07.pdf">Tournament Organizer's Handbook</a>:</p>

<ul>
<li>OMP - <strong>Opponents’ Match-Win Percentage.</strong> <em>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.</em></li>
<li>GWP - <strong>Game-Win Percentage.</strong> <em>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.</em></li>
<li>OGP - <strong>Opponents’ Game-Win Percentage.</strong> <em>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.</em></li>
</ul>

CC BY-SA 4.0
2023-07-14T22:49:36.613Z
The links in this answer are broken. What is the definition of X please?
user3490
CC BY-SA 3.0
2013-02-22T05:19:03.277Z
2013-02-22T05:25:43.507Z
2013-02-22T05:25:43.507Z
ire_and_curses
<p>I am using <a href="http://mtgarena.appspot.com/">mtgarena</a> for my tournament organization.</p>

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

<p>Example:</p>

<pre><code>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
</code></pre>

<magic-the-gathering><tournament>
What is the meaning of OMP, GWP, OGP?
developarvin
# What is the meaning of OMP, GWP, OGP?

(Asked by: username_0 on 2013-02-22)

I am using [mtgarena](http://mtgarena.appspot.com/) for my tournament organization.

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

Example:

```
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

```

**Tags:** magic-the-gathering, tournament


---

## 1 answers

### Answer by username_1 on 2013-02-22. Score: 7 | Accepted answer

These are percentages, used by the DCI as [tie-breakers](http://www.wizards.com/dci/downloads/tiebreakers.pdf). From Section C4 of the [Tournament Organizer's Handbook](http://www.wizards.com/dci/downloads/TOHndBk_Feb_5_07.pdf):

* 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.*

> **Comments:**
> **username_2**: The links in this answer are broken. What is the definition of X please?  

---

