Calcutta betting: how an auction pool pays the field

The night before a race meeting, tickets that had drawn a horse were auctioned at a lottery dinner, claret on the tables, and the Royal Calcutta Turf Club's history records bids that the winners could not pay. Calcutta betting, in that room, ran on lotteries of usually 1,000 rupees, 100 tickets at 10 rupees, and the successful bidder paid the original ticket holder plus an equivalent sum into the fund, on top of the pot.

Where Calcutta betting began, the night before the race

A meeting in 1847, of gentlemen interested in the Turf, resolved to form the Calcutta Turf Club, partly because collecting those dinner bids had become a long and vexatious business. The Hindu, on February 29, 2024, dates the club's coming into existence to February 22, 1847. The club's page leaves out the day and keeps the cause: bids that could not be collected.

The Calcutta Derby Sweep was first drawn in 1867, with a pool of 34,700 rupees. Both the club history and The Hindu put the later peak at 1.25 crore rupees, which is 12.5 million rupees, in 1929 and 1930. The club's history calls that sum nearly a million pounds sterling. The Sweep was discontinued in 1953. The club had become Royal in 1912, after the visit of King Emperor George V. The Hindu adds that he had come as Prince of Wales in 1905 and again in 1912.

Chances, at 10 rupees, went only to club or stand members, with no agents and no advertising, so an outsider had to find a member. At the peak a glass drum held about 1.25 million tickets. It has disappeared. The smaller drum, used before 1928 and again until 1953, was still in the stands in February 1989, when Warren Wilson, director of betting at the Royal Hong Kong Jockey Club, saw it. The club sent it to Hong Kong for lucky draws. The history is plain that it was not put back to drawing the Sweep.

The split the club's history records is a distribution, and it is not dated to the 1867 draw. First prize was 40% of the total pool, second 20%, third 10%, unplaced horses 20%, and the club and its expenses 10%. In the history's own words, 90% of each 10-rupee chance went into the draw. Applied to the 1929 and 1930 pool, 40% of 12.5 million rupees is 5 million rupees. That multiplication uses the club's stated percentage and the club's stated pool. It is not a recovered prize cheque, and it is not evidence that the 1867 pool of 34,700 rupees used the same table.

What Calcutta betting sells, one entry at a time

Calcutta betting sells one exclusive claim on one entry, then pays that owner from a purse built out of the auction. Alaska Statutes section 05.15.690 defines a Calcutta pool as a game in which a prize of money is awarded from a pool of wagers on a contest of skill, limited to amateur and professional sporting events other than horse racing, in the state, and in which those who wager bid at auction for the exclusive right to purchase or wager upon a particular contestant or entrant. The Derby Sweep reached a similar exclusive claim by another route. A lottery of usually 1,000 rupees, made of 100 tickets at 10 rupees, drew horses against ticket numbers, and only the tickets that had drawn a horse went to auction, according to the Royal Calcutta Turf Club. The winning bidder paid the original holder and matched that payment into the fund. What the room bought was one claim on one horse.

Horse racing sits outside the Alaska definition, which is the awkward historical fact. The Sweep that carried the name around the world was a horse-race lottery plus an auction. The statute that now writes "Calcutta pool" into Alaska law leaves horse racing out and keeps the event inside the state. A published definition can describe the mechanism and still refuse the original sport. The permission and the nickname have drifted apart.

In June 1950, during the Southern Amateur in New Orleans, a pool was proposed at Metairie Country Club while the championship itself was played at New Orleans Country Club. Lee S. Read, vice-president of the Southern Golf Association and a Kentucky member of the United States Golf Association's Sectional Affairs Committee, wrote in the August 1950 USGA Journal that 13 officers and directors telegrammed a protest. The wire quoted the association's policy that it did not approve organised gambling in connection with the playing of the game. Metairie withdrew permission. The pool scheduled for the following evening was cancelled.

A split the room can read before the first bid

Ivanhoe's sheet, headed December 2017, is the cleanest modern contrast because it prints two pools side by side and then, in a note at the top, says the auction section was suspended in 2022 for lack of interest. The optional self-purchase pool was kept. Treating the auction as a live Saturday-night fixture at that club would misread the page. The rules are still the rules of a format, with a date on them.

Those rules award the auction pool to the purchasers of the three best scores, divided 60% first, 30% second and 10% third. If two people tie for first, the club's note gives them half of the combined first and second pool, and the next player the third-place pool. First plus second is 90%, so half of that portion is 45% of the pool for each of the two, and the next player takes the 10% written for third. Three or more tying for first share the whole pool equally. A tie for second, beside a single winner, shares the combined second and third portions, 40% of the pool, in half. The page states no year's total for the Vin O'Meara Memorial Trophy auction, so the example stays in percentages.

• Which entries are offered for sale, and whether a player must agree to be included
• Whether a partnership may bid, which Ivanhoe's rule 6 forbids
• The half-share offer, the auction price and dividend it covers, and when it has to be made
• The refund, and the matching reduction of the pool, if the player misses the first week
• The place percentages and the tie method, including a two-way tie for first
• What the organiser keeps, and whether expenses sit inside that share or beside the prizes
• A public copy of the rules where every participant can read them before bidding

Beside the auction, Ivanhoe prints an optional fixed-price pool with an entry fee of $25. Players can buy only themselves. The same 60%, 30% and 10% apply. A player who misses the first week is refunded, and that pool shrinks by the fee. One sheet, two structures: equal stakes against an open auction, identical place percentages, and no published total because the total depends on who enters or who bids.

The half the player is offered back

Ivanhoe's rule 7 requires the successful bidder to offer the player an option to take up a half share in the auction price and in the dividend. Rule 6 bars bidding partnerships. Rule 8 refunds the auction price, and reduces the pool, if the auctioned player does not play in the first week. The half-share sentence does not say that the player's payment is added to the pool, nor that it is kept by the bidder outside it. The old Sweep was explicit on a different plumbing: the bidder paid the ticket holder and paid an equivalent amount into the fund. Copying the Sweep's cash path onto Ivanhoe's option would invent a rule the golf sheet does not contain.

"The pleasure of playing with friends and the thrill of winning a match or tournament are all the reward a true amateur golfer should expect."

Richard D. Chapman, former USGA Amateur and British Amateur champion, Pinehurst, N.C. (USGA Journal and Turf Management, June 1956)

His account of one small pool, in the same essay, is a reported set of figures and not a prize formula. The pool was only about $4,000. An intoxicated man opened the bidding at about $1,200 and bought the ticket on Chapman and his brother. The next day the owner said they were entitled to purchase 50% of the team. The brother declined. Chapman declined, then took the half after the owner said a true sportsman was compelled to. They won. Chapman recorded a net profit of $23.60. The journal does not print the table that turned a $1,200 claim, a 50% buy-in and a $4,000 pool into that profit. Inverting the anecdote to discover a hidden payout percentage would pretend the missing table is in the paragraph.

One buyer, which a pari-mutuel pool will not allow

A pari-mutuel pool and Calcutta betting clear on different ownership. Many tickets can name the same horse, the pool is the sum of the stakes, and the winning tickets divide what remains after the deduction the law allows. New Jersey's P.L. 2021, chapter 89, says a permitholder shall distribute all sums deposited in a pool where the patron selects one horse, less an amount which shall not exceed 17% of total deposits, plus the breaks. The same act sets the ceiling at 19% for two horses and 25% for three or more. That 17% is a legal maximum on the deduction, not a report from one track on one afternoon, and the breaks sit on top of it. Winning stakes then share the net pool, so two holders of the same horse are both paid. A second Calcutta bidder holds no exclusive claim once the hammer has assigned it.

Ivanhoe forbids a bidding partnership and still requires the half-share offer back to the player. The Sweep let the ticket holder sell to anyone at the dinner. Neither version lets the room stack separate tickets on the same name.

A fixed-odds slip does not build this purse

Grading a fixed-odds slip means checking it against the price the book accepted when the slip was struck, which is the subject of how a sportsbook grades the slip. The Calcutta owner is paid a posted share of a purse that becomes a number only after the bids are in. No accepted price sits on a ticket to be re-priced at the off.

Margin at a sportsbook is an earnings result, counted after tickets have been graded. DraftKings' reported sports margin is that kind of after-the-fact line, a business total rather than a percentage printed on a pool sheet the night before. Where a Calcutta sheet names an organiser's share, the share is known before the first bid. Where the sheet is silent, as Ivanhoe's auction rules are silent, the pool is the sum of the accepted bids, reduced only by the refunds the rules already describe.

Many people can hold the same side of a contract. The separate count of that share of US sports handle measures how large those markets have become beside sportsbooks. Calcutta betting still knocks each entry down once, and the person who stopped bidding holds nothing.

What the organiser keeps, and what must be posted

Section 05.15.160(e) is easy to over-read. It limits the total of expenses incurred and prizes awarded to 50% of the pool of wagers. It does not say the permittee keeps 50%, and it does not say the winners receive 50%. Expenses and prizes share one cap. A night that spends heavily on the room has less left inside that cap for prizes. Section 05.15.180 adds conduct rules: one Calcutta permit for each event, no pool on elementary, secondary or post-secondary school sport or on a youth organisation's event, a minimum age of 18 for the person wagering and for the contestant, and rules publicly posted and available to every participant.

Alaska regulation 15 AAC 160.715, effective November 4, 2005, tightens the room itself. Each pool needs its own permit. The auction takes place at a single event. The bidder is physically present and personally makes every bid. A proxy bid, or a bid by indirect communication, is outside the rule. The regulation also refuses a payment of the pool's net proceeds to the person who merely authorised someone else to run it.

That Alaska sentence covers an Alaska permit. A club night in another state can copy the auction, the half share and a 60% first prize, and still sit outside the statute. The mechanism travels more easily than the permission. No national table of organiser cuts exists in the sources above, which is why the Sweep's 10%, Ivanhoe's silence and Alaska's 50% cap should stay in their own documents.

William C. Campbell, captain of the previous year's Walker Cup team, had circulated the June 1956 resolution in which 250 amateurs refused to let their names be sold in a Calcutta pool. Announcing it, he put a clock on the refusal.

"If we go along and refuse to cooperate for a year or so, Calcuttas will disappear."

William C. Campbell, captain of the previous year's Walker Cup team (USGA Journal and Turf Management, June 1956)

This article is informational analysis only and is not betting advice.

18+Gambling carries financial risk and can be addictive. If you or someone you know needs help, visit GamCare (UK), call 1-800-GAMBLER (US), or see our Responsible Gambling page.