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System Builder

Build betting systems, back-test them over 8+ years of results, and get today's qualifiers.

Runs

20,005

Wins

5,989

Win SR

29.9%

P/L (BSP)

+312.40

ROI (BSP)

+4.2%

A/E

1.04

The System Builder is a Proform Premium feature

Filter 8+ years of UK & Irish results by race conditions, ratings, market and last-time-out form — with full P/L at SP and Betfair SP, breakdowns and daily qualifiers.

Learn about Proform Premium

System Builder

Define conditions, back-test against results since 2018, then check today's qualifiers.

System Name

From

Betfair Comm %

Follow-up mode

Your conditions define the qualifying run; the system backs the horse's next starts instead.

Back the next starts

Stop at a win

Saved Systems

System Performance Follow-up

Calculating…

Running full analysis…

All metrics

Rules changed since the last full run — the breakdowns, runs & robustness tabs may be out of date.

Follow-up mode — showing the back-test summary only. Breakdowns, staking & qualifiers bet the qualifying race, so they don't apply here.

Equity Curve

cumulative P/L per price model, level stakes · bookie lines from 2023

Breakdowns

Runs

Most recent first — capped at 2,000 rows

Holdout Check last 12 months vs the rest

Waiting for backtest...

Streaks & Drawdown

Waiting for backtest...

Staking Plans

Bet type

Price basis

Starting bank (pts)

Base stake (pts)

Bank %

Kelly frac

Re-stakes the exact bets this system matched, at the chosen price. A finite bank that can bust (stop at £0). Kelly uses the system's realised edge on each runner's market-implied chance — illustrative, not a forward model. Bust-risk = % of 200 reshuffles of the bet order that bust the bank.

System Builder

System Builder

System Performance Follow-up

Equity Curve

Breakdowns

Runs

Holdout Check last 12 months vs the rest

Streaks & Drawdown

Staking Plans

Qualifiers