The Pivot: How Seats Move Over an Evening
Two players swap. Everybody else stays put. Almost every source describes it as a rotation, and a rotation seats you differently.
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The Pivot is a swap, not a rotation. At the end of a round the player who was East first changes places with the player on their right — two people move, the other two stay exactly where they are. Almost every source describes it as everybody shifting one seat, which leaves the table in a different state entirely. You can play for a year without meeting any of it, because casual tables usually never finish a round and just keep dealing.
East moves every hand
Start with the part that is not in dispute. East rotates after every single hand — win, loss or wall game. There is no repeat dealership in the American game: winning does not keep you East.
Play itself runs counterclockwise, to East's right. So over four hands, the four players each take a turn as East, and the dice travel all the way round the table.
Worth saying once, since it trips people who arrive from card games: East is called the dealer but does not deal. Each player takes their own tiles from the wall. The title moves round the table; the job never existed.
That is a round
Four hands, one East each, dice back where they started. And the player who was East first — the one the dice began with — has a name, and a seat swap of their own coming.
The Pivot is the original East. It is not table slang: the term comes from the League's own January 2017 newsletter. If nobody at your table has heard it, that is normal — it is one of the least-transmitted pieces of official terminology in the game.
The swap everybody describes wrongly
Just before the Pivot would be East for a second time, the seating changes. Here is what actually happens, next to what people usually say happens:
The Pivot swaps seats with the player on their right, taking the dice along, and then rolls to start the next round. Two people move. The other two do not.
A rotation moves all four players and preserves who is sitting next to whom — you keep the same left-hand and right-hand neighbours, just in new chairs. A swap between two players changes the neighbour relationships for those two.
So the two procedures leave the table in different states. They are not interchangeable descriptions of one thing, whatever a source that describes it as a rotation implies.
What it changes
The League's newsletter gives the procedure without giving a reason, so what follows is an observation rather than a rule. In a game where passing is directional, your seat decides who you feed: across a long evening you pass right to the same person on every first Charleston pass, and receive from the same person every time. Moving two players changes that for those two.
Rolling dice for East and breaking the wall at an unpredictable point are both rules with a stated purpose — preventing a stacked wall. The Pivot has no stated purpose that we have found, so we are not going to invent one for it.
What to do if your table has never done this
Nothing, unless you want to. Home games usually rotate East and never track rounds at all, and nobody is playing wrongly by doing that — you simply never reach the moment the Pivot rule covers.
It is worth knowing anyway, for one reason: if you ever read a source that describes the seat change as everybody moving one place, you now know that source is not following the League's own wording. That is a useful thing to be able to spot in a source you are about to trust on something harder.
When you have read it all: the rules workbook, 105 questions with an answer key that cites the rule behind every answer, $19.
Where this comes from
The Pivot, the definition of a round, and the swap with the right-hand player all come from Tom Sloper's rules FAQ, citing the National Mah Jongg League's January 2017 newsletter. That East rotates every hand with no repeat dealership, and that play runs counterclockwise, are confirmed independently by the American Mah-Jongg Association and I Love Mahj.
Seat naming is the one part where sources genuinely differ: the League names only East and describes the other three positionally, while some vendor material assigns all four winds. We follow the League and note the disagreement rather than pretend it is settled. Either way the wind tiles decide nothing — dice choose East, and the wind tiles are ordinary tiles that appear in hands.