The Union Jack Round Robin takes the familiar 3×3 grid structure – nine selections forming eight lines across rows, columns, and diagonals – but replaces each line’s Patent with a Round Robin. That swaps 7 bets per line for 10, since a Round Robin adds up-and-down bets on top of the doubles and treble.
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The result is an 80-bet structure that’s noticeably more complex to settle by hand than its Patent-based cousin. Up-and-down bets in particular behave differently from a simple double, since the first leg’s winnings become the stake for the second. This calculator handles that sequencing correctly across all eight lines at once.
π How to Use the Union Jack Round Robin Calculator
Fill in the 3×3 grid exactly as you would on a betting slip – name, decimal odds, and result (Win, Lose, or Void) for each of the nine selections. Grid position determines the eight lines, so keep the order consistent with your actual bet.
Every Round Robin bet type behaves slightly differently under void rules – up-and-downs in particular don’t reduce the same way a simple double does.
Set your unit stake, which applies per bet (there are 80 bets total, 10 per line), pick your currency, and the full breakdown recalculates as soon as any field changes.
π’ Calculator Fields Explained
Selection Name – A label for the runner or outcome, used only for readability in the results.
Odds (Decimal) – The decimal price for that selection. All internal calculations use decimal odds.
Result – Win, Lose, or Void for that selection, applied consistently across every line it belongs to.
Unit Stake – The stake applied to each of the 80 individual bets, not a total outlay figure.
Currency – Display currency for stake and return figures.
π° Understanding the Results
| Result Field | What It Means |
|---|---|
| Total Stake | Unit stake multiplied by 80 (the fixed number of bets across the whole grid) |
| Total Returns | Sum of every winning, partially-reduced, and void-refunded bet across all eight Round Robins |
| Profit / Loss | Total Returns minus Total Stake |
| Bets Won / Lost / Void | How many of the 80 individual bets fell into each category |
| Line breakdown | Stake, winning bets (out of 10), and return for each of the eight lines |
Each line’s 10 bets break down as 3 doubles, 1 treble, and 3 up-and-down pairs (6 bets), all drawn from that line’s own three selections.
An up-and-down bet is two separate sequential wagers, not one double – a losing second leg wipes out winnings already banked from the first leg.
That sequencing is the main reason a Round Robin line can return differently from a Patent line built on the exact same three results.
Up-and-down bets roll winnings forward into the next leg – a loss there forfeits what was already won.
π Calculation Formulas
| Bet Type | # of Bets per Line | Total Across 8 Lines |
|---|---|---|
| Doubles | 3 | 24 |
| Treble | 1 | 8 |
| Up-and-Down pairs (2 bets each) | 6 | 48 |
| Total | 10 | 80 |
Doubles and the treble follow standard multiple-bet maths: multiply the decimal odds of the surviving legs together and apply the unit stake, with void legs simply removed from the calculation. An up-and-down bet works differently – the first selection’s return becomes the stake for the second, and the “down” direction repeats this in reverse order.
If a selection in an up-and-down bet is void, the wager stands at whatever point it had reached rather than reducing like a normal double.
If the very first selection in a given direction is void, that direction effectively becomes a single bet on the remaining selection at the same stake.
π Practical Examples
Example 1 – Clean sweep. All nine selections win at 2.00. Every double, the treble, and both directions of each up-and-down pay out in full across all eight lines, producing the maximum possible return for the stake used.
Example 2 – One loser breaks an up-and-down. Two selections in a line win but the third loses. Any up-and-down direction that relies on the losing selection as its second leg forfeits winnings already banked from the first leg – a result a simple double wouldn’t show.
Comparing the Round Robin and Patent versions of the same results side by side is the clearest way to see how up-and-down sequencing changes the numbers.
Example 3 – One void selection. Eight selections win, one is void. Doubles and the treble involving that selection reduce cleanly, while up-and-down directions starting from the void leg become singles on the surviving selection instead.
Example 4 – Mixed grid. A realistic spread of wins, losses, and one void across different rows and columns shows some lines returning strongly while others – particularly those hit by a losing second leg in an up-and-down – underperform relative to their Patent equivalent.
A single losing second leg in an up-and-down can erase winnings the first leg had already secured.
π‘ Tips & Best Practices
Understand that a Round Robin costs more per line than a Patent (10 bets versus 7), so the same unit stake produces a noticeably higher total outlay across the full grid.
Pay close attention to the order of legs within an up-and-down – the “up” and “down” directions aren’t symmetrical once a loss or void enters the picture.
Place your most trusted selection in the centre position, since it still feeds into four lines just as it does in the Patent version of the grid.
Always mark genuine non-runners as Void rather than Lose, since up-and-down handling of void differs meaningfully from how it treats a straightforward loss.
Use the line-by-line table to spot exactly which Round Robins underperformed, rather than relying on the headline profit figure alone.
- Confirm each selection’s grid position matches your actual betting slip before staking
- Keep a note of which up-and-down direction affected the result, for reconciling against the bookmaker’s settlement
Running the numbers before placing an 80-bet structure catches sequencing surprises that a quick mental double-check would miss.
Finally, treat correlated selections (two runners from the same race, for example) with caution – a Round Robin’s value comes from genuinely independent results across the grid.
β οΈ Common Mistakes to Avoid
Treating Up-and-Down Like a Simple Double
An up-and-down is two sequential single-stake bets, not one combined double – the distinction matters most when a loss occurs on the second leg.
Confusing an up-and-down with a double leads to overestimating returns whenever the second leg of either direction loses.
Always check which selection funded which leg before assuming a simple product of the odds.
Misreading Void Handling on Up-and-Downs
Void rules for up-and-down bets differ from doubles – the bet stands at the point already reached rather than reducing to a smaller combination.
A void selection partway through an up-and-down direction locks in whatever return that leg had already produced, rather than voiding the whole bet.
Overlooking this can lead to under- or over-stating the true return for that line.
Underestimating the 80-Bet Total Outlay
Because unit stake applies per bet, a modest Β£2 stake still produces a Β£160 total outlay across the full grid – considerably more than the Patent version.
Ignoring the Extra Cost Versus a Patent
Bettors sometimes assume a Round Robin and Patent grid cost roughly the same; in reality the Round Robin adds 24 extra bets across the same nine selections.
Underestimating the true 80-bet outlay is the costliest mistake bettors make with this structure.
π― When to Use This Calculator
The Union Jack Round Robin suits bettors who already like the Patent-based Union Jack’s broad coverage but specifically want the added up-and-down component across all eight lines.
A Round Robin rewards bettors who value the extra flexibility of up-and-down bets enough to accept the higher outlay it brings.
It’s a poorer fit for anyone working to a tight staking budget, since the jump from 56 to 80 bets is a meaningful increase in total cost for the same nine selections.
π Related Calculators
Union Jack Patent Calculator, Round Robin Calculator, Patent Calculator, Yankee Calculator, Lucky 15 Calculator, Trixie Calculator.
π Glossary
Round Robin – A bet on three selections: 3 doubles, 1 treble, and 3 up-and-down pairs (10 bets total).
Union Jack – Nine selections in a 3×3 grid, forming 8 lines from rows, columns, and diagonals.
Up-and-Down – A pair of sequential bets where the first selection’s return becomes the stake for the second, run in both directions.
Void – A selection that didn’t run or was officially cancelled; handled differently for doubles/trebles versus up-and-downs.
Double – A bet requiring two selections to both win.
Treble – A bet requiring three selections to all win.
Decimal Odds – Odds format where the stake is included in the potential return figure.
Line – One of the eight Round Robins making up the Union Jack (a row, column, or diagonal).
Unit Stake – The stake applied to each individual bet within the overall 80-bet structure.
Total Outlay – The full amount staked across all 80 bets.
Single Stakes About – Another name for an up-and-down bet.
Coverage Bet – A multiple bet designed to return a profit even if not every selection wins.
β Frequently Asked Questions
How many bets are in a Union Jack Round Robin?
The full grid contains 80 individual bets in total – eight lines, each structured as a 10-bet Round Robin.
At a Β£2 unit stake, that’s a total outlay of Β£160 before any returns are factored in.
What makes an up-and-down different from a double?
A double simply multiplies both selections’ odds together if both win. An up-and-down is two sequential bets, where the first selection’s winnings become the stake for the second.
If the second leg of either direction loses, the winnings already generated by the first leg are forfeited entirely.
This sequencing means an up-and-down can return less than an equivalent double even when both selections technically win.
How is void handled in an up-and-down bet?
If a selection is void, the bet stands at whatever point it had reached – it doesn’t reduce to a smaller combination the way a double or treble does.
A void first selection effectively turns that direction into a single stake on the remaining selection instead.
Is a Round Robin more expensive than a Patent on the same grid?
Yes – a Round Robin uses 10 bets per line versus a Patent’s 7, so the same nine selections cost 80 bets total instead of 56.
Whether the extra up-and-down coverage is worth that cost depends on how much value you place on the added flexibility.
Can I profit even if a couple of selections lose?
Yes – because the grid spreads nine selections across eight overlapping lines, strong results elsewhere on the grid can offset losses in one or two lines.
The line-by-line breakdown shows exactly which Round Robins carried the overall return and which underperformed.
βοΈ Legal Disclaimer
This calculator is provided for informational and educational purposes only. It does not constitute betting advice, and past or projected returns are not a guarantee of future results. Always check the specific settlement rules of your bookmaker, as up-and-down and void handling can vary by operator. Please gamble responsibly and within your means.
