Double elimination planner
Your data
Everything here is counted, not simulated. The number of matches in this format does not depend on who wins, only on how many entered and on whether the grand final has to be replayed.
Results
Matches the whole thing takes
—
| In the winners bracket | — |
| In the losers bracket | — |
| Rounds in the losers bracket, plus the final | — |
| Matches the winner plays if they never lose | — |
| Matches the winner plays if they lose the first one | — |
| Byes, because the field is not a power of two | — |
How long the day runs
| If it goes | Games | Hours of play | Hours on the clock |
|---|
The two rows are the honest bounds rather than a guess. Nobody can say how many games a best of series will take without assuming who is stronger, so the table shows the short version where every match is a sweep and the long version where every match goes the distance. The real day lands between them.
The hours on the clock assume the matches that can run side by side actually do, and that nothing waits. Real brackets wait: a losers round cannot start until the winners round above it has finished, so treat that column as the floor and not the forecast.
Why the grand final can be played twice
Because otherwise the format would not be what it says on the tin. The player coming out of the winners bracket has not lost yet; the one coming out of the losers bracket has lost once. If a single defeat in that last match sent the first of them home, they would be leaving on one loss in a tournament that promises two.
Replaying it fixes exactly that, and it is why the total is one match longer when the player from the losers bracket wins the first one. Events that drop the replay are quietly running something else and giving one finalist a harder job than the other.
How many matches does double elimination take?
Twice the number of entrants minus two, and one more than that if the grand final is replayed. Sixteen entrants means thirty matches, or thirty one.
It is a count rather than an estimate, and it does not depend on the draw or on upsets. Every match makes exactly one loss, everybody who goes out has exactly two, so the matches and the losses are the same pile counted from two sides.
Why is the grand final sometimes played twice?
Because the player arriving from the winners bracket has not lost yet. If one defeat in that last match knocked them out, they would be leaving on a single loss in a format whose whole promise is two.
The replay puts that right, and it is exactly why the total is one match longer when the player from the losers bracket wins the first final. Events that skip it are running something other than double elimination, and giving one finalist an easier route than the other.
Do byes change the number of matches?
No, and this catches people out. A knockout of any size needs one match fewer than it has entrants, whether or not the field is a power of two, because each match removes exactly one player and all but the champion must be removed.
What byes do change is the number of rounds, since the bracket is drawn at the next power of two. Twenty entrants sit in a bracket of thirty two with twelve byes, and still play the same nineteen winners bracket matches that twenty entrants always play.
Why does the length come as a range instead of one number?
Because working out how many games a best of series takes would mean assuming who is stronger, and this page does not know that. What it can say honestly is the two ends: every match a sweep, and every match going to the last game.
The clock column also assumes that everything which can run side by side does. Real brackets wait, because a losers round cannot begin until the winners round above it is done, so read that column as the floor rather than the forecast.
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