Cards betting explained: booking points and totals

Cards betting is a football market on how many yellow and red cards a match will produce. It comes in two main forms. Total cards counts the cards shown, so over 3.5 cards wins with four or more. Booking points weights them: 10 points for a yellow and 25 for a red, with a cap of 35 for any one player, so over 45.5 booking points needs the equivalent of five yellows. Both settle on normal time only, and both depend as much on the referee as on the teams.

Booking points, scored

Most bookmakers use the same scale, per Goal and bookierules:

What happens to one player	Booking points	Total cards
One yellow	10	1
Straight red	25	1
Yellow, then straight red	35	2
Two yellows, sent off	35	2 at most books

A second yellow is not scored as another 10. It is scored as the red it leads to, so a player sent off for two yellows earns 10 plus 25, which is 35, the most one player can contribute. Some books count a red as two cards in total-cards markets; read the rules before you bet.

Two real examples

Everton's Jacob Ramsey came off the bench at Newcastle on 2 November and was sent off for two yellow cards in 86 seconds, per Sky Sports. For booking points that is 35 from one player in under a minute and a half, as much as three and a half ordinary yellows.

Two days earlier Jean-Philippe Mateta was shown a red card 13 minutes into Crystal Palace's 2–0 home defeat by Tottenham, per ESPN. A straight red is 25 points and one card, and it comes with a second effect: ten men usually defend for longer, which tends to bring more fouls and more yellows for the side that is short.

How cards bets settle

The rules vary at the edges, so treat this as the usual pattern, per MSport and bookierules:

• Normal time only. Cards in extra time or after the final whistle do not count.
• Players on the pitch only. Cards to managers, coaching staff or players on the bench are excluded at most books.
• Totals by half are separate markets. A first-half cards line settles at half-time.
• Abandoned matches. Usually void unless the result was already decided, for example over 3.5 cards when four had been shown.

A worked fair price

Cards, like goals, are counted events, so a Poisson distribution is a reasonable first model. You need one number: the average total cards you expect for this match. Here is what three averages give for the common lines. The numbers are illustrative, not a BAI8 forecast.

Expected cards	Over 2.5	Over 3.5	Over 4.5	Over 5.5
3.5	67.9% (1.47)	46.3% (2.16)	27.5% (3.64)	14.2% (7.02)
4.2	79.0% (1.27)	60.5% (1.65)	41.0% (2.44)	24.7% (4.05)
5.0	87.5% (1.14)	73.5% (1.36)	56.0% (1.79)	38.4% (2.60)

The figure in brackets is the fair price, 1 divided by the chance. With an average of 4.2 cards, over 3.5 is about 60.5%, fair at 1.65. A bookmaker offering 1.80 implies 55.6%, about five points under that estimate; one offering 1.50 implies 66.7%, a price shorter than fair. How to read that gap is in what a positive edge actually means.

What moves the average

• The referee. Some referees show far more cards than others, and the appointment is often announced only a day or two before the match.
• What is at stake. Derbies, relegation games and knock-out ties tend to run hotter than a mid-table game in October.
• How close the match is. A tight game has more tactical fouls than a 4–0. A near-level match-result card is a hint of that.
• Red cards. One red changes how both sides play for the rest of the match; see what a red card does to a live price.

On Thursday's Desk card for Crystal Palace v Hoffenheim we have the two sides almost level, which is the kind of game where neither team can sit back:

Desk card, Palace v Hoffenheim	Our chance	Fair price
Crystal Palace	36.3%	2.75
Draw	26.9%	3.72
Hoffenheim	36.8%	2.72

Our full card is in Crystal Palace vs Hoffenheim prediction, odds and team news.

Why the margin matters here

Cards lines are thinner markets than the match result. Bookmakers take less money on them, the margin is often wider, and limits are lower. A price that looks a little generous can simply be a wide market. What the margin costs you is in what the bookmaker's margin really costs you.

What this does not tell you

It does not give you a cards price for any real match. BAI8 does not price cards; our Desk cards price the match result only, and the worked example is illustrative. A Poisson model also assumes cards arrive independently, which a red card or a flashpoint breaks. It is an estimate method, not a promise.

18+. Bet only what you can afford to lose.