Table Tennis Service Rotation Validator
Instantly check who serves next and whether the game is at deuce, based on ITTF's 2-point service rotation rules
Table Tennis Service Rotation Validator
Instantly check who serves next and whether the game is at deuce, based on ITTF's 2-point service rotation rules
What Are Table Tennis Service Rotation & Deuce Rules?
Under current ITTF rules, service in table tennis rotates every 2 points — one player serves points 1–2, the other serves points 3–4, and so on — regardless of who wins each rally. This is different from badminton and volleyball, where only the serving side scoring keeps the serve; in table tennis, the serve rotates on a fixed schedule no matter who is winning points.
At deuce (10–10), the rotation shortens to every single point instead of every 2, and play continues until one player establishes a 2-point lead. Games are played to 11 points (win by 2, no upper cap), and a match is decided over a best-of-5 or best-of-7 sequence of games depending on the competition format.
How to Use This Validator
Why the 2-Point Service Rotation Exists
The rule changed from 5-points-per-serve to 2-points-per-serve in 2001, specifically to make the serving advantage swing back and forth more often — a long serving streak in the old system could let a strong server build an early, hard-to-overcome lead before their opponent ever got a real chance to attack. The shorter rotation makes each individual point matter more, since no player can lean on serve dominance for long.
The switch to single-point rotation at deuce exists for the same reason taken further: at 10–10, both players are one point from a chance to win, so alternating every single serve keeps the pressure of serving and receiving evenly split during the moments that decide the game, rather than letting the same server hold that leverage across two straight points.
?Frequently Asked Questions
Every 2 points, regardless of who wins each rally — one player serves for 2 consecutive points, then service passes to the opponent for the next 2, and so on throughout the game. This changes to every 1 point once the score reaches 10–10 (deuce).
Once the score reaches 10–10, the game no longer ends at 11 — play continues with serve alternating every single point until one player achieves a 2-point lead (e.g. 12–10, 15–13). There is no upper score cap, unlike badminton's 30-point ceiling.
No — this is a common misconception carried over from other racket sports. In table tennis, the serve rotates on a fixed 2-point (or 1-point at deuce) schedule regardless of who wins each rally. Winning a point does not grant or take away the serve.
Most competitive table tennis matches are best-of-5 games (first to win 3 games), though top-level tournaments including the Olympics use best-of-7 (first to win 4). Recreational and some domestic league play sometimes uses best-of-3.
Yes — each new game starts its own 2-point rotation from that game's first server, and the player who served first in a given game changes each game (the player who received first in the previous game serves first in the next), so the serving order alternates game to game across the match.
Yes, significantly. In doubles, the serve must go diagonally from the server's right half-court to the receiver's right half-court, and after each 2-point rotation, the receiving player also rotates in a fixed sequence (partner of the previous receiver becomes the new server), so all four players cycle through serving in a specific set order across the match.
The ball must rest freely on the open palm of the server's stationary hand, be tossed near-vertically at least 16cm, and be struck so it bounces once on the server's own side of the table before crossing the net and bouncing on the receiver's side. Serving without the required toss height, hiding the ball with the free arm, or striking it before it starts descending are all faults that award the point to the receiver.
A let (called when the serve clips the net but still lands correctly in the receiver's court) doesn't count as a point either way — the point is simply replayed with the same server serving again. Unlike some other racket sports, there is no limit on how many consecutive lets can occur before the point is decided normally.
Yes, in one specific way: in the final game of a match (e.g. game 5 of a best-of-5, or game 7 of a best-of-7), the players switch ends as soon as either player reaches 5 points — a rule unique to the deciding game, designed to neutralize any side-of-table advantage (lighting, backdrop, drafts) exactly halfway through the game that will decide the match.
As soon as the error is noticed, play stops and service is corrected to whoever should actually be serving according to the rotation — any points already scored during the incorrect serving sequence stand and are not replayed, only the service order itself is fixed going forward.