Tennikoit, also called ring tennis or tenniquoits, is a sport played on a tennis-style court, with a circular rubber ring ("tennikoit", c.f. the game quoits) hurled over a net separating the two players, with each endeavoring to catch and return the hurled ring into the opponent's court. The sport is played on indoor and outdoor courts.

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Quick Facts Nicknames, First played ...

Tennikoit

Tennikoit, a.k.a. "Ring tennis" at the 2010 World Championships (women's doubles)
Nicknames	Ring tennis, tenniquoits
First played	unclear more immediate ancestor likely the game of deck tennis some sources claim a German origin[1]
Characteristics
Contact	No
Team members	Singles Doubles Mixed Doubles
Mixed-sex	Separate men's and women's competitions Mixed teams: 1 male 1 female
Type	Indoor or outdoor
Equipment	Rubber ring
Presence
Olympic	No
Paralympic	No
World Games	No

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A number of disciplines exist. "Singles" is a two-player game requiring two opposing players. "Doubles" is a four-player game requiring two teams opposing each other where each team consists of two players each. In "Mixed Doubles", one male player and one female form a team.^[2]

The sport is played in 14 countries.^[3] It is particularly popular in Germany, South Africa, Brazil, and the Subcontinent nations of India, Pakistan, and Bangladesh.

The origins of tennikoit are unclear, with some sources claiming a German origin,^[4] but a more immediate ancestor of the game is likely the game of deck tennis, a physical recreation activity commonly played on cruise ships at the start of the 20th century on smaller versions of tennis courts using rings made of rubber or another soft material.^[5]

The game begins as one player serves the ring upwards over the net, diagonally into the opponents court, and the opponent tries to catch the ring before it can land in their court, and if so throw it back. Each player takes five services in a row, regardless of whether they have scored points for a serve, and then the opponent serves for the following five turns.

Each individual (or double) tries to score 21 points in order to be declared a winner, but the winner must maintain a lead of two points over the opponent to win. A game consists of 3 sets of 21 points; the winner of 2 sets wins the match. However, a time limit of 30 minute is in place per set. Thus a server should win a point within nine rallies; failing to do so will then result in a point for one's opponent.

The game may be played in singles (one player per side) or doubles (a pair per side).

Faults include a koit hitting the net posts, leaving the court entirely (even if it eventually lands in the court) or striking or passing through the net, as well as wobbling or shaking of the koit.