Match Points
Players earn 3 match points for each match win and 0 points for each match loss. On MTGO, matches ending in a draw are counted as a loss for both players. Players receiving byes are considered to have won the match.
Game Points
Game points are similar to match points in that players earn 3 game points for each game they win and 1 point for each game that ends in a draw, and 0 points for any game lost. Unfinished games are considered draws. Unplayed games are worth 0 points.
Opponent’s Match-Win Percentage (first tiebreaker)
A player’s match-win percentage is that player’s accumulated match points divided by the total match points possible in those rounds (generally, 3 times the number of rounds played).
If this number is lower than 0.33, use 0.33 instead. The minimum match-win percentage of 0.33 limits the effect low performances have when calculating and comparing opponents’ match-win percentage.
IMPORTANT: Byes are excluded from the calculation when figuring opponent’s match-win or game-win percentages.
Examples: You compete against these three opponents in an 8-round tournament, although only the first player completed all rounds.
| Tournament Record | Match Points | Max Match Points | Match-win % Tibreaker |
| 6-2 | 18 | 24 | .667 |
| 2-5 | 6 | 21 | .286, raised to .33 (the minimum) |
| 1-3 | 3 | 12 | .25, raised to .33 |
| 3-5, including a bye | 6 | 21 | .286, raised to .33 |
| 3-3 | 9 | 18 | .500 |
| 8-0 | 24 | 24 | 1.000 |
| 5-2 | 15 | 21 | .714 |
| 6-2 | 18 | 24 | .750 |
This player’s OMW% tiebreaker is 57.76%, the average of the 8 opponents’ tiebreaker figures
Matches in playoff rounds are not counted toward tiebreaker calculations. Tiebreaker values are frozen at the end of the Swiss rounds.
Game-Win Percentage (second tiebreaker)
Similar to the match-win percentage, a player’s game-win percentage is just the total number of game points they earned divided by the total game points possible (3 times the number of games played).
Because it’s just a ratio and not an average of opponents’ values, there is no minimum-value per round with your own game-win percentage (0-2 = 0 match points out of 6)
If a player receives a bye, that player is considered to have won the round 2-0 (6 game points out of 6).
If a game is drawn, it counts as 1 game point for each player (and adds to each player’s total game count).
If a player loses a match due to running out of time, the last game of the match is considered to have been won by the opponent. (Example: If a player times out due to inactivity in Game 1, the game score of that match is 1-0 – 1 game played)
Opponents’ Game-Win Percentage (third tiebreaker)
Similar to opponents’ match-win percentage, a player’s opponents’ game-win percentage is simply the average game-win percentage of all that player’s opponents. And, as with opponents’ match-win percentage, each opponent has a minimum game-win percentage of 0.33.
An opponent’s byes are ignored when computing their opponents’ game-win percentages.