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Sportexa AI Blog

Articles: Bankroll & Mathematics

We write about competition context, pre-match analysis, betting angles, live signals and the way sport decisions change when data and match rhythm move together.

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THE JOURNAL

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18 articles

04 October 2026 3 min read

Manual Hedge vs Cash Out: Compare the Final Amounts

Formulas for an opposing bet and cash out in the same binary market, with a numerical example that includes both stakes and the limits of the calculation.

Bankroll & Mathematics General topics Intermediate

04 October 2026 3 min read

Bet Resettlement After a Statistics Correction: What to Keep and Check

What to retain when an official result or statistical event changes after a match, and how to check whether the correction changes settlement under the market terms.

Bankroll & Mathematics General topics Intermediate

04 October 2026 3 min read

Survivorship Bias in Betting Records: Who Is Missing from a Winning Sample

Why visible or surviving wins cannot replace a complete decision log, and how to restore the denominator for an honest performance review.

Bankroll & Mathematics General topics Intermediate

24 September 2026 3 min read

Three-Way Overround: A Worked 1X2 Calculation

A worked three-outcome example converts decimal odds to implied probabilities and measures how far their sum sits above 100%.

Bankroll & Mathematics General topics Intermediate

24 September 2026 3 min read

Fixed Stake vs Percentage of Bankroll: A Numerical Comparison

Compare a fixed unit with 2% of the remaining balance after a losing run, and see how the stake share changes under each method.

Bankroll & Mathematics General topics Intermediate

24 September 2026 3 min read

Betting Hit Rate and Confidence Intervals: What 60% Does Not Tell You

A 60-from-100 example uses a Wilson interval to show sampling uncertainty and why hit rate is not the same as profitability.

Bankroll & Mathematics General topics Advanced

23 September 2026 3 min read

“Fair” Probability Without Margin: A Two-Outcome Calculation

See how to normalize reciprocal odds for a two-outcome market and why the result is not the true probability of an event.

Bankroll & Mathematics General topics Intermediate

23 September 2026 3 min read

Closing Line Value: What the Closing Line Can and Cannot Tell You

CLV compares your recorded price with a later closing line. Learn how to match the market, read movement and understand the metric's limits.

Bankroll & Mathematics General topics Intermediate

23 September 2026 3 min read

Bankroll Drawdown: How to Calculate It and When to Stop

Drawdown measures a fall from a previous peak, not just a final loss. Learn the formula, tracking method and how to define a pause in advance.

Bankroll & Mathematics General topics Intermediate

23 September 2026 3 min read

Why 20 Bets Cannot Validate a Strategy

A strong win rate in a short run can still be consistent with a wide range of underlying results. See an interval example and why odds matter.

Bankroll & Mathematics General topics Intermediate

23 September 2026 3 min read

Betting Journal: What to Record for an Honest Analysis

To review your decisions, record the price before the event, exact market, stake, source and settlement status—including passes and voids.

Bankroll & Mathematics General topics Beginner

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