TennisYar
All ranked matches are played as best of 3 sets. Each set is first to 6 games with a tiebreak at 6-6 (first to 7 points). If players split the first two sets 1-1, a super tiebreak (first to 10 points, must win by 2) is played instead of a full third set. The super tiebreak decides the match winner.
Players are entitled to a maximum 5-minute warm-up before the match begins. Warm-up is not part of match play and does not affect the score.
The challenging player is responsible for securing the court booking. Court costs are split equally between both players unless agreed otherwise in advance.
Both players must confirm the result on TennisYar within 24 hours of the match ending. If the losing player does not confirm within 24 hours the result is automatically confirmed based on the winner's submission.
If both players submit conflicting scores the match is flagged as disputed. Both players must provide evidence. Admin will review and make a final decision within 48 hours.
A player who withdraws from a confirmed match less than 24 hours before the scheduled time receives a warning. Three warnings result in a temporary ranking freeze for 30 days.
A player who fails to appear for a confirmed match without prior notice has a walkover loss recorded in their match history. No tennis was played, so neither player’s TY Rating moves.
Players are expected to call their own lines honestly. Deliberate cheating or unsportsmanlike conduct reported and verified by admin results in immediate disqualification from the ranking system.
Players must provide their own rackets. New balls are strongly recommended for ranked matches and should be agreed between players before the match.
Only ranked matches affect the TY Rating. Friendly matches are recorded in match history but carry zero ELO impact. Players more than 1.5 TY Rating points apart may only play friendly matches.
Players may challenge anyone within 1.5 TY Rating points above or below their current rating for a ranked match. Challenging a player rated more than 1.5 points higher is permitted as a friendly match only and carries no rating impact for either player.
If a lower-ranked player wishes to request a ranked match against a significantly higher-ranked player, the higher-ranked player has full discretion to accept or decline, and declining carries no penalty. Accepting a challenge from a player more than 1.5 points below your level is considered a gesture of sportsmanship and is noted on your profile.
A higher-ranked player who consistently declines all challenges from players within 1 point of their rating for more than 60 days will be marked as "Avoiding competition" on the leaderboard.
Players in the top 10 of the national ranking are encouraged to accept at least 2 challenges per month from players ranked 11–30 to maintain the integrity of the national ranking.
The TY Rating is Tennis Yar’s own rating, shown on a 1.0–16.5 scale. Behind it is the ELO rating system, the same system used in chess and professional sports. If you complete the self-assessment your rating starts from that estimate; otherwise it starts at 5.0. From there it rises when you beat stronger players and falls when you lose to weaker ones. The number means something inside Tennis Yar only: it is not equivalent to, and does not transfer to, any external rating system.
The Formula
New Rating = Current Rating + K × MOV × (Result − Expected)
A win is a win and a loss is a loss: the Result is only ever 1 or 0. How decisively you won enters through the MOV multiplier, never through the Result itself.
| Matches Played | K Factor | Meaning |
|---|---|---|
| 0–9 | 48 | Rating moves quickly, finding your level |
| 10+ | 24 | Settled: moves steadily, but not wildly |
| Returning after 180 days | 42 (next 5 matches) | Catches up faster after a long break |
A more decisive win is worth a little more, but only a little. The reference is a routine straight-sets 6-4 6-4, whose multiplier is exactly 1.00; every other scoreline is priced against it. The multiplier never goes below 0.60 or above 1.50.
| Scoreline | Multiplier | Rating move |
|---|---|---|
| 7-6 6-7 7-6 | 0.60 (floor) | +0.04 |
| 6-4 4-6 7-5 | 0.68 | +0.04 |
| 6-4 6-4 | 1.00 (reference) | +0.06 |
| 6-2 6-2 | 1.37 | +0.08 |
| 6-0 6-0 | 1.50 (cap) | +0.09 |
For two equally rated, established players (K=24). So a routine straight-sets win moves you about 0.06, so roughly 17 such wins are needed to climb one full TY Rating point.
Running up the score against a weaker opponent is not a shortcut: the more likely you were to win, the less each win is worth. A player 400 ELO above their opponent earns about 1.85 ELO for a 6-4 6-4 and about 2.94 ELO for a 6-0 6-0. The entire reward for the demolition is around 0.01 of a TY Rating point.
Example
You (TY Rating 5.0, still inside your first 10 matches, so K=48) beat a player at 6.0 by 6-4 6-4. Your expected win probability was 24%, so the upset is worth more: you gain about 40 ELO points, which is +0.20 on the TY Rating scale. Had you lost, you would have dropped about 11 ELO (−0.05). Losing to a stronger player costs less than losing to a weaker one. Once you are established at K=24, the same win is worth +0.10.
Estimated vs Earned
Until you have played 10 ranked matches your rating is provisional: it shows with an "Est." marker if you completed the self-assessment, and as "Unranked" if you did not. You need at least 1 confirmed ranked match to appear in the national ranking.
A Long Absence, No Penalty
Your rating does not decay. There is no periodic deduction and there never has been. If you go 180 days without a ranked match your number is left exactly as it is but treated as out of date, and the first 5 matches after you come back are calculated at a higher K (42) so your rating re-finds your real level faster, whether you got better or worse.
Rating Floor
No player's rating ever falls below 1.0 (an ELO of 500), no matter how many matches they lose.
Retirements, Walkovers and No-shows
If your opponent retires mid-match the result is still a full win and a full loss, and only the margin bonus is withheld: the MOV multiplier is capped at 1.00, and it is lower still if the match was close when it stopped. Walkovers and no-shows are recorded in your history but move nobody's rating, because no tennis was played to measure.
Fairness Principle
Beating a much stronger player rewards you more. Losing to a much weaker player costs you more. The system is designed to reflect true skill, not match count.
TennisYar is built on the belief that tennis is more than a sport: it is a relationship between two people who share a passion for the game. How you conduct yourself on and off the court defines not just your reputation on this platform, but the quality of the community we build together.
Arrive on time. Your opponent has reserved their time for you. Being late without notice is disrespectful and wastes both players' court time. If you are going to be late, notify your opponent through the TennisYar chat as early as possible.
Call every ball honestly, including those that go against you. If you are not sure, the ball is in. Do not call a ball out unless you clearly saw it land outside the line. Honest line calls are the foundation of amateur tennis: there are no referees, only your integrity.
Win humbly and lose with dignity. Do not celebrate your opponent's mistakes. Do not make excuses after a loss. Acknowledge good shots from your opponent. A player who loses gracefully and congratulates their opponent earns more respect in this community than a player who wins arrogantly.
Aggressive language, racket abuse, and verbal outbursts directed at your opponent are not tolerated on TennisYar. Playing with anger affects your own game and creates a hostile environment. Composed players play better tennis. If you feel frustrated, take a breath between points instead of taking it out on your opponent or your equipment.
Whether you are playing someone ranked 20 places above or below you, give them your full effort and respect. Do not tank a match against a lower-ranked player. Do not be condescending toward beginners: every top player was once a beginner. The diversity of skill levels in this community makes everyone better.
Confirm match results within 24 hours. Deliberately delaying result confirmation to avoid a rating loss is unsportsmanlike and undermines the integrity of the ranking system. This community works because players trust each other. Do not abuse that trust.
As a TennisYar member you are an ambassador of this community. How you behave at clubs, toward coaches, and toward other players reflects on all of us. We are building the largest and most respected tennis community in Iran. That reputation is built one interaction at a time, by each one of us.
If you experience or witness genuinely unsportsmanlike behaviour (deliberate cheating, harassment, or abuse), report it through the app. Reports are reviewed confidentially by admin. False or malicious reports made to harm another player's standing will themselves result in sanctions. The reporting system exists to protect the community, not to be weaponised.
