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Tennis betting bankroll management: understanding units

A clear staking convention makes a betting record easier to understand. It does not make betting safe or guarantee growth.

1. Keep a dedicated, affordable betting bank

Use only money you can afford to lose. Keep essential spending and savings separate. Decide your limit before following picks; do not borrow or increase stakes to recover losses.

2. Understand one unit

The club’s proportional staking convention is one unit equals 1% of a dedicated betting bankroll. With a £1,000 bank, one unit is £10. If you recalculate from the current bank, the stake falls when the bank falls and rises when it grows.

A one-unit loss costs that stake. At decimal odds of 3.58, a winning one-unit bet returns 3.58 units including the stake, for 2.58 units of net betting profit. A void bet returns the stake and makes no betting profit. Check the bookmaker or exchange’s actual settlement rules.

3. Keep results and costs in perspective

Losing bets and losing periods are part of following a service. Keep a record of your accepted or matched odds, stakes, outcomes, exchange commission and other fees. Do not chase losses or assume a longer time horizon guarantees recovery.

Reinvested net winnings can allow compounding, but losses also reduce the bank. Proportionate staking does not remove risk. Membership costs can exceed betting profit, especially at smaller stakes.

Why a loss needs a larger percentage recovery

A drawdown is a decline from a previous bank peak. The percentage gain needed to return to that peak is larger than the percentage lost, because the gain starts from a smaller amount. For a loss fraction d, the required recovery is d ÷ (1 − d). This is arithmetic, not a forecast or a reason to increase stakes.

Illustrative recovery calculation from a £1,000 starting peak; no deposits, withdrawals or costs
Drawdown Bank remaining Gain needed to return to £1,000
10% £900 11.11%
20% £800 25.00%
30% £700 42.86%
50% £500 100.00%

For example, a 20% fall takes £1,000 to £800. Returning to £1,000 requires £200, which is 25% of £800. Increasing the next stake does not remove the possibility of another loss. These stipulated examples describe changes in a bank; they are not historical club results, an affordable-stake recommendation or a promised recovery.

Keep a personal execution record

Record the recommended odds separately from the price and stake you actually accepted, and retain losses, voids and missed selections. Our public research resources and blank evaluation worksheet provide a consistent starting point. Keep currency, unit conventions and costs clear; do not combine a tipster’s advised-price record with your own execution as though they were the same sample.

Flat stakes and a changing bank are different calculations

Our historical calculator compares fixed cash stakes with staking 1%, 2% or 3% of a changing bankroll. You can optionally deduct membership costs; other charges remain excluded. These are sequential historical simulations, not forecasts or measured member cash returns. Actual outcomes depend on your stakes, available prices, costs and settlement.

Compare fixed and compounded historical returns · Read every result and losing period · See the club’s selection and staking process