Calculators

The Union Jack Trixie sits between the Trebles and Patent versions of this bet: nine selections in the familiar 3×3 grid, but each of the eight lines

Rule 4 deductions catch out more bettors than almost any other quirk of horse racing wagering. When a horse is withdrawn too close to the off for bookmakers

Player Efficiency Rating (PER) condenses a basketball player’s entire box score into a single per-minute number, weighting positive actions like

The Union Jack Trebles is the simplest member of the Union Jack family – nine selections in a 3×3 grid, but each of the eight lines (three rows

The Relative Strength Index, or RSI, is one of the most widely used momentum indicators in financial spread betting. It measures how fast and how far a

A Patent is a classic multiple bet made up of 3 selections, combined into 7 separate bets: 3 singles, 3 doubles, and 1 treble. Unlike a straight treble

The Union Jack Round Robin takes the familiar 3×3 grid structure – nine selections forming eight lines across rows, columns, and diagonals –

A Round Robin is the flexible cousin of the fixed-format multiples like the Trixie or Yankee. Instead of locking you into one specific combination of doubles

Passer rating is the NFL’s official measure of quarterback efficiency, combining completion percentage, yards per attempt, touchdown rate, and interception

The Union Jack is one of British betting’s most distinctive multiple bets – nine selections arranged in a 3×3 grid, generating eight separate