Ping Pong Rules: The Complete Guide (Scoring, Serving, Equipment & Faults)

Ping pong rules look trivial from the outside — hit it over the net, don’t miss. Then you play someone who knows them, and discover that your serve has been illegal for fifteen years, that the edge ball you conceded was actually your point, and that the rules changed more recently than you think. This is the complete guide: scoring, serving, equipment, doubles, and the odd corners (expedite, lets, the free-hand rule) that decide real matches.

The rules in 60 seconds

• Games to 11 points, win by 2. Matches are best of 5 or 7 games.
• Every rally scores — server or not.
• Serve changes every 2 points; every 1 point after 10–10 (deuce).
• The serve: 16 cm (6 in) vertical toss from a flat open palm, struck behind the end line, ball visible throughout.
• Singles: serve anywhere. Doubles: diagonally, right court to right court.
• A serve that clips the net and lands legally is a let — replay, unlimited times.
• You lose the point if you volley, double-hit, move the table, or touch it with your free hand.
• The edge of the playing surface is in. The side below it is out.

Scoring rules

Games are first to 11 points with a two-point margin, and every rally scores regardless of who served — table tennis moved to rally scoring in 2001. Matches are best of 5 games (first to 3) in most amateur play, and best of 7 (first to 4) at professional level.

At 10–10 — deuce — the serve alternates every single point instead of every two, and play continues until someone leads by two. There’s no cap: 12–10, 15–13, 24–22 are all legal finishes.

Ends change after every game. In the deciding game, players also switch ends when the first player reaches 5 points — a rule that exists because table conditions (lighting, background, air movement) are never perfectly symmetrical, and a deciding game shouldn’t be decided by which end you drew.

The 21-point ghost

If you learned this game before 2001, you learned 21-point games where only the server could score, with serve changing every 5 points. That system died in 2001 — the ITTF shortened games to 11 to make matches more television-friendly and to punish slow starts. Plenty of family basements never got the memo, which is fine: if that’s how your household plays, our guide to the 21-point rules documents the old system properly.

Why the change matters tactically: in a 21-point game you could afford a slow start and settle in. In an 11-point game, losing the first three points means you’re already a third of the way to losing. Modern table tennis is front-loaded — serves and third-ball attacks decide games before they develop.

Serving rules (where most players are quietly illegal)

The serve is the most regulated shot in the sport, because it’s the only one your opponent can’t influence. Every requirement exists to stop the server gaining an unfair edge:

The visibility rule is the one with a history. Until 2002, hiding the serve was legal and elite players built entire careers on serves the receiver literally could not read. The ITTF banned concealment, and a generation had to rebuild their serves around spin rather than deception — arguably the single biggest rules-driven change to how the sport is played. Full technique and the seven ways players break these rules are in our serving rules guide and illegal serves breakdown.

Lets: the unlimited replay

A serve that touches the net and still lands legally is a let: no point, replay the serve, as many times as it happens. There’s no limit — a player can theoretically serve twenty lets in a row. Beyond serves, the umpire (or opponent) can call a let if play is disturbed: a ball rolls in from another table, the receiver wasn’t ready, or something interrupts the rally through no one’s fault.

Equipment rules — including the one that changed in 2021

Most rules guides tell you a racket must have ‘one red side and one black side’. That has been out of date since 1 October 2021.

The ITTF approved the change at its 2019 AGM and it took effect in October 2021. The logic: as long as the two sides are clearly and distinguishably different, there’s no reason to mandate red specifically — but black stays compulsory on one side so players with colour vision deficiency can always identify which rubber they’re facing. That identification matters enormously, because pips-out and anti-topspin rubbers behave so differently from inverted ones that not knowing which side struck the ball is a genuine competitive disadvantage.

The rest of the equipment rules are looser than people expect:

• There is no maximum paddle size. The blade must be flat, rigid, and at least 85% natural wood by thickness — no dimension limit exists.
• The two sides must be different colours even if one side has no rubber at all.
• The ball is 40 mm+, 2.7 g, plastic (celluloid was phased out in 2014). Colour: white or orange, and it must contrast with the surroundings.
• The table is 9 × 5 ft at 30 in high, net 6 in — full specs in our dimensions guide.
• Rubber must be ITTF-approved for sanctioned play, and boosters/speed glues with volatile solvents are banned.

During the rally: what’s legal and what isn’t

The edge ball deserves its own note because it causes more arguments than any other call. A ball that clips the top edge of the table is in, full stop — even though it shoots off at an unplayable angle and feels like theft. A ball that strikes the vertical side panel is out. The distinction is a matter of millimetres and it is genuinely hard to judge at speed; at club level, the honest convention is that the player nearest the bounce makes the call, and you take their word.

Doubles rules

Doubles adds two rules that reshape the game entirely:

1. Serves must go diagonally — right half-court to right half-court. The centre line belongs to the right half for serving purposes, so a serve that clips it is good.
2. Partners must alternate every shot. You, opponent, your partner, their partner — in strict rotation. Hitting two balls in a row for your team loses the point, even on an easy putaway.

That alternation rule means doubles is as much about movement as hitting: after every shot you must clear space for your partner, which produces the circling and side-stepping patterns you see in good pairs. The serving rotation cycles through all four players, and it’s the part everyone finds confusing — we work through a full cycle with a table in our doubles rules guide.

The odd corners: timeouts, expedite, and coaching

• Timeouts: each player or pair gets one 60-second timeout per match.
• The expedite rule: if a game reaches 10 minutes without both players having at least 9 points, expedite kicks in — serve alternates every point and the receiver automatically wins the rally if they make 13 consecutive returns. It exists to end defensive marathons and is almost never seen outside chopper-vs-chopper matches.
• Towel breaks: permitted after every 6 points and at game changeovers — not whenever you feel like it.
• Coaching is allowed between games at most levels, and increasingly during timeouts.
• Racket inspection: in sanctioned events, umpires may check your racket before a match — and you can’t swap it mid-match unless it’s genuinely damaged.

Official rules vs the game in your garage

Casual play breaks the rules constantly and that’s completely fine — nobody needs a 16 cm toss to enjoy a basement game. But the gap is worth knowing if you ever intend to play a league match, because these are the habits that don’t survive contact with an umpire:

The one worth fixing early is the serve. Everything else you can adopt in an afternoon, but a serve motion built over years of illegal habits is genuinely hard to rebuild under pressure. If there’s any chance you’ll play competitively, groove a legal toss from day one — details in the serving guide, and the technique that makes a legal serve nasty in our spin guide.

Frequently asked questions

Can you lose on your own serve in ping pong?

Yes. Miss the table, fail to clear the net, or break the toss rules and your opponent scores. There is no second serve in table tennis.

Do you have to serve diagonally in singles?

No — that’s doubles only. In singles you may serve to any part of your opponent’s side. This is the single most common false ‘rule’ in casual play.

What happens at 10–10?

Deuce: the serve alternates every point and play continues until someone leads by two. There’s no upper limit.

Is the edge of the table in or out?

The top edge is in — it’s part of the playing surface. The vertical side below it is out.

How many lets are allowed in a row?

Unlimited. Each one is simply replayed.

Does my racket still have to be red and black?

One side must be black. The other can be red, pink, purple, green or blue — the ITTF expanded the options effective 1 October 2021. Red and black remains legal, just no longer mandatory.

Can I use a paddle of any size?

Technically yes — the rules specify no maximum dimensions, only that the blade is flat, rigid, and at least 85% natural wood by thickness. Practically, oversized paddles are slow and unwieldy, which is why nobody uses them.

Is it a let if the serve hits the net and lands in?

Yes — replay it. If it hits the net and fails to land legally, that’s a fault and your opponent gets the point.

Benjamin Fink

Benjamin Fink is the founder and lead table tennis reviewer at PingPongReviewed. He has played competitive club table tennis for over 17 years, including national-level tournaments, and has personally play-tested hundreds of paddles, rubbers, blades, tables, and training robots.

Every recommendation he publishes follows the site’s hands-on evaluation process — see How We Test for the full methodology. When he isn’t reviewing gear, Benjamin coaches beginners and writes training guides to help recreational players improve faster.