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Difference between revisions of "Tournament results"

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== How to read the results ==
 
== How to read the results ==
  
−
=== Segments ===
+
=== Tournaments, events and segments ===
  
−
Long tournaments are split-rated in multiple segments as follows:
+
Many tournaments feature multiple series of games called
 +
''events'' (for example, early bird event, main event, night event).
 +
In some cases (often with night events), the events may be interleaved.
 +
Events are rated separately, in the order in which they started.
  
−
* Tournaments of 16 or fewer rounds are rated in a single segment.
+
The games within an event may be rated together in a single ''segment'',
 +
or the event may be split into multiple segments as follows:
  
−
* Tournaments of 17 through 35 rounds are rated in two approximately equal segments.
+
* Events of 16 or fewer rounds are rated as a single segment.
  
−
* Tournaments of 36 or more rounds are rated in three approximately equal segments.
+
* Events of 17 through 35 rounds are rated in two approximately equal segments.
 +
 
 +
* Events of 36 or more rounds are rated in three approximately equal segments.
  
 
If the segments must be of unequal size, then earlier segments are assigned extra rounds.
 
If the segments must be of unequal size, then earlier segments are assigned extra rounds.
  
−
Text cross-tables have one listing per segment,
+
=== About ranks, wins and spread ===
−
followed by separate listing of final standings when applicable.
+
 
−
Graphical cross-tables have one listing per tournament,
+
Within these listings, a player is identified by a number called a ''rank''.
−
with a pair of rating columns for each segment.
+
Ranks are computed separately for each division in each listing, and their purpose is to locate and identify the players and their opponents.  Ranks are not the same as the player numbers used during the tournament.
 +
 
 +
The ranks are based on the number of ''wins'' (versus losses) included in the listing.  A tie counts as half a win (and half a loss).  Byes count as wins and forferits as losses, but these may not be included in the listing, depending on the input file format used.  Byes and forfeits are not used when computing ratings.
 +
 
 +
Players with the same number of wins are assigned ranks based on their ''spreads.''
 +
Spread is the differene of the total number of points scored by the player and the total number of points scored by opponents against the player.  Spread may also be adjusted in certain situations, but these adjustments may not be included in the listing.  Spread is not used when computing rating.
 +
 
 +
A player’ computed rank may not be identical to a his or her official placement in the event, because the rank may apply only to one segmet, it may not include all data (as explained above), and some tournaments use a different method (for example, special finals) to determine the winners.
  
 
=== Graphical cross-tables ===
 
=== Graphical cross-tables ===
  
−
The graphical cross-tables feature the following information:
+
The graphical cross-tables have one listing per event,
 +
with a pair of rating columns for each segment.
 +
The listings feature the following information:
  
 
;Rank
 
;Rank
−
:A player’s rank at the tournament, based on their wins, losses and spread. (This may not be equal to the official final placement, as it does not reflect certain adjustments).
+
:A player’s computed rank within the division at this event.
 
;Name
 
;Name
 
:A player’s name, starting with the first name.
 
:A player’s name, starting with the first name.
 
;W-L
 
;W-L
−
:A player’s record of wins and losses.  Byes count as wins, forfeits as losses, and ties as half-win/half-losses.
+
:A player’s record of wins and losses.  Half wins are displayed using a “½” symbol.
 
;Spread
 
;Spread
−
:The difference between the number of points a player scores and the number of points scored by all of the opponents.
+
:A player’s spread for this event.
 
;Rating
 
;Rating
−
:A pair of columns with a player’s rating according to the rating system in effect for this tournament. If more than one pair of columns is given, this event was split-rated because of its length.
+
:A pair of columns with a player’s rating according to the rating system in effect for this event. If more than one pair of columns is given, this event was split-rated because of its length.
 
;Old
 
;Old
−
:A player’s pretournament rating.
+
:A player’s rating before this event.
 
;Perf
 
;Perf
−
:A player’s performance rating, representing the player’s strength counting only this event.
+
:A player’s performance rating during this segment.  This is an estimate of the player’s strength in this segment only.  It is based on game results and opponents’ pre-segment ratings only, ignoring the player’s own pre-segment rating.
 
;New
 
;New
−
:A player’s post-tournament rating.
+
:A player’s rating after this event.
 
;Rd. N
 
;Rd. N
−
:A player’s rating after the specified round.
+
:A player’s rating after the specified round (this information is repeated at the segement boundaries of split-rated events).
 
;+/−
 
;+/−
−
:The difference between the player’s pretournament and post-tournament ratings.
+
:The number of rating points the player gained (+) or lost (−) in this segment.
 
;Round-by-Round Results
 
;Round-by-Round Results
−
:A player’s list of opponents, with photos where available (hover mouse over photo for name), one of WLTB (win, loss, tie or bye), opponent rank, player score and opponent score.
+
:A player’s list of opponents, with photos where available (hover mouse over photo for name), result (W=win, L=loss, T=tie or B=bye), opponent's rank, player score and opponent score.  The result is also indicated by the background color of the cell.
  
 
=== Text cross-tables ===
 
=== Text cross-tables ===
  
−
The text cross-tables feature the following information:
+
The text cross-tables have one listing per segment.
 +
Split-rated events are followed by separate listing of total wins, spreads and final ranks (the final listing does not include ratings, and ranks are not the official placements).
 +
To find a player’s rating at the end of an event, look at the last segment of the event.
 +
 
 +
The listings feature the following information:
  
 +
;Rank (a number at the beginning of a row, no column header)
 +
:A player’s rank within the division at this segment.
 
;NAME
 
;NAME
 
:A player’s name, starting with the last name (as listed in the rating list)
 
:A player’s name, starting with the last name (as listed in the rating list)
 
;OLD RATING
 
;OLD RATING
−
:A player’s rating before this tournament segment
+
:A player’s rating before this segment
 
;NEW RATING
 
;NEW RATING
−
:A player’s rating after this tournament segment
+
:A player’s rating after this segment
 
;PERF RATING
 
;PERF RATING
−
:A player’s performance rating during this tournament segment. I.e., the old rating that they would have had to have had for it to have remained unchanged as their new rating.
+
:A player’s performance rating during this segment. This is an estimate of the player’s strength in this segment only. It is based on game results and opponents’ pre-segment ratings only, ignoring the player’s own pre-segment rating.
 
;RESULTS
 
;RESULTS
−
:A player’s win-loss record, showing whether they had a win (W), tie (T), loss (L) or forfeit/bye (B), and the number of their opponent that round.
+
:A player’s win-loss record, showing whether they had a win (W), tie (T), loss (L) or forfeit/bye (B), and the rank of their opponent that round.
 
;WINS
 
;WINS
−
:A player’s number of wins. Half wins may be displayed using a ‘+’ sign.
+
:A player’s number of wins. Half wins are displayed using a “+” sign.
 
;SPR
 
;SPR
−
:The number of points by which a player has outscored all of his or her opponents.
+
:A player’s spread for this segment.
 +
 
  
 
=== Printing ===
 
=== Printing ===
  
 
Cross-tables are large and usually print better in landscape orientation, reduced to less than 100% of nominal size.
 
Cross-tables are large and usually print better in landscape orientation, reduced to less than 100% of nominal size.

Revision as of 04:29, 16 July 2009

Starting July 2009, this page features detailed tournament results (also known as cross-tables) for all sanctioned tournaments.

The results are filed according to the month in which they were entered into the rating system: if a tournament is held late in a month, its results may be filed under the following month.

The results are also copied from this web site with a slight delay and made available on our partner web site cross-tables.com with more extensive statistics.

Recent results

Results before July 2009 are available courtesy of the NSA.

Each month’s results are available as text only for viewing on small screens or slow connections; or in a graphical format with player photos, for viewing on large screens or fast connections.

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2009 text
pic 		text
pic 		text
pic 		text
pic 		text
pic 		text
pic 		text
pic 		not yet available

You may also be interested in viewing the ratings computed as a result of these events.

How to read the results

Tournaments, events and segments

Many tournaments feature multiple series of games called events (for example, early bird event, main event, night event). In some cases (often with night events), the events may be interleaved. Events are rated separately, in the order in which they started.

The games within an event may be rated together in a single segment, or the event may be split into multiple segments as follows:

  • Events of 16 or fewer rounds are rated as a single segment.
  • Events of 17 through 35 rounds are rated in two approximately equal segments.
  • Events of 36 or more rounds are rated in three approximately equal segments.

If the segments must be of unequal size, then earlier segments are assigned extra rounds.

About ranks, wins and spread

Within these listings, a player is identified by a number called a rank. Ranks are computed separately for each division in each listing, and their purpose is to locate and identify the players and their opponents. Ranks are not the same as the player numbers used during the tournament.

The ranks are based on the number of wins (versus losses) included in the listing. A tie counts as half a win (and half a loss). Byes count as wins and forferits as losses, but these may not be included in the listing, depending on the input file format used. Byes and forfeits are not used when computing ratings.

Players with the same number of wins are assigned ranks based on their spreads. Spread is the differene of the total number of points scored by the player and the total number of points scored by opponents against the player. Spread may also be adjusted in certain situations, but these adjustments may not be included in the listing. Spread is not used when computing rating.

A player’ computed rank may not be identical to a his or her official placement in the event, because the rank may apply only to one segmet, it may not include all data (as explained above), and some tournaments use a different method (for example, special finals) to determine the winners.

Graphical cross-tables

The graphical cross-tables have one listing per event, with a pair of rating columns for each segment. The listings feature the following information:

Rank
A player’s computed rank within the division at this event.
Name
A player’s name, starting with the first name.
W-L
A player’s record of wins and losses. Half wins are displayed using a “½” symbol.
Spread
A player’s spread for this event.
Rating
A pair of columns with a player’s rating according to the rating system in effect for this event. If more than one pair of columns is given, this event was split-rated because of its length.
Old
A player’s rating before this event.
Perf
A player’s performance rating during this segment. This is an estimate of the player’s strength in this segment only. It is based on game results and opponents’ pre-segment ratings only, ignoring the player’s own pre-segment rating.
New
A player’s rating after this event.
Rd. N
A player’s rating after the specified round (this information is repeated at the segement boundaries of split-rated events).
+/−
The number of rating points the player gained (+) or lost (−) in this segment.
Round-by-Round Results
A player’s list of opponents, with photos where available (hover mouse over photo for name), result (W=win, L=loss, T=tie or B=bye), opponent's rank, player score and opponent score. The result is also indicated by the background color of the cell.

Text cross-tables

The text cross-tables have one listing per segment. Split-rated events are followed by separate listing of total wins, spreads and final ranks (the final listing does not include ratings, and ranks are not the official placements). To find a player’s rating at the end of an event, look at the last segment of the event.

The listings feature the following information:

Rank (a number at the beginning of a row, no column header)
A player’s rank within the division at this segment.
NAME
A player’s name, starting with the last name (as listed in the rating list)
OLD RATING
A player’s rating before this segment
NEW RATING
A player’s rating after this segment
PERF RATING
A player’s performance rating during this segment. This is an estimate of the player’s strength in this segment only. It is based on game results and opponents’ pre-segment ratings only, ignoring the player’s own pre-segment rating.
RESULTS
A player’s win-loss record, showing whether they had a win (W), tie (T), loss (L) or forfeit/bye (B), and the rank of their opponent that round.
WINS
A player’s number of wins. Half wins are displayed using a “+” sign.
SPR
A player’s spread for this segment.


Printing

Cross-tables are large and usually print better in landscape orientation, reduced to less than 100% of nominal size.

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