SINGLE ANDDOUBLE-ELIMINATION

TOURNAMENT

Reported by:Crisanta B. MontejoJona May Tonjoc

A type of elimination determines the winner by eliminating the loser in every match until there is one team left.

The easiest and fastest way to declare a winner.

Single Elimination Type of Tournament

Best Use:• When the number of entries is large.• When the time is short.• When the number of playing venue is

limited.

Single Elimination Type of Tournament

Formula:

where: G --number of gamesN --number of entries

G= N-1

Computing the Number of Games Using the Formula in Single Elimination Type of

Tournament

Formula:

Where: P --least power of 2 higher than N

Fixed value—2, 4, 8, 16, 32… (2x2=4x2=8x2=16x2=32…)

N--number of entries

Bye --entitles a team to advance to the next round without playing

-- able to play during second round

Compute The Number Of Byes Using The Formula In Single

Elimination Type Of Tournament.

There are 6 participating teams in table tennis.

=6-1 G = 5

G= N-1

There are 6 participating teams in table tennis.

=8-6 Bye = 2

Step 1: Assign letters to the participating teams.

ABCDEF

Step 2: Assign byes and pair the remaining teams.

A B C D E F

-BYE

-BYE

A-Bye B C

D E F-Bye

(1)

(2)

(4)

(3)

W2

W1

W4

W3 (5)

Champion!

Step 3: Write the game numbers.

Advantages and Disadvantages

OfSingle Elimination

Sportsmanship

“Bato-bato Pick”

DOUBLE-ELIMINATIONTOURNAMENT

DOUBLE-ELIMINATION TOURNAMENT

a type of elimination tournament competition in which a participant ceases to be eligible to win the tournament’s championship upon having lost two games or matches.

It stands in contrast to a single-elimination tournament, in which only one defeat results in elimination.

Purpose: All contestants remain in championship contention until they lose two games

Advantages:• A player or team must be beaten twice to be

eliminated• It selects a more adequate winner• It maintains player motivation right up until the

end

Disadvantages• It takes longer to run• It emphasizes elimination

Instructions• Formula – min # of games: (N-1) 2Max # of games: 2(N-1) + 1• Construct a single elimination tournament with

appropriate # of slots• Close the blocks of first round• Complete the “losers side” Note – every odd # round should have the same # of

slots as the previous round• Criss cross losers so they don’t play the same team

again.

• One method of arranging a double-elimination tournament is to break the competitors into two sets of brackets, the Winners Bracket and Losers Bracket