The swiss ladder system has its origin in chess, but is becoming very popular also in other sports. The swiss ladder system is a good mixture of the round robin system and the elimination system. It is assures that
- all entries have the same number of matches to play
- players of different levels can participate on the same tournament (i.e. strong and weak players)
- most of the matches, especially in the middle and end of the tournament, are between players of nearly equal strength
- the matches between very different players count, because not only win and loss are counted, but also the achieved points
- each entry plays against many other entries, but never twice against the same
- not all players have to play against all others.
A detailled description of the system can be found in the online help system of SPORT.
The following sample shows the first two rounds of a mixed tennis tournament with 13 players: 
Ranking after round 1
| 1:0 | Björn Borg | 6:2 | | | Michael Stich | | | | Monica Seles | 6:3 | | | Steffi Graf | | | Michael Chang | 6:4 | | | Stefan Edberg | | | | Boris Becker | 7:5 | | 0:1 | Gabriela Sabatini | 5:7 | | | Martina Hingis | 4:6 | | | Pete Sampras | | | | Lindsay Davenport | 3:6 | | | Anke Huber | 2:6 | | | Ivan Lendl | |
The pairings of the second round are done by random, but separately for the players with 1:0 points and the players with 0:1 points:
| 
