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Michael Heaton

Tipster dossier — settled-bet performance through 2026-09-14 06:31 UTC

Verdict
STRUCTURALLY LOSING
Calibration is negative: actual win rate 20.0% trails market-implied 26.7% by -6.7pp — picks have negative skill relative to fair odds. Recent 30d (ROI -41.5%) is materially worse than the prior 60d (-20.4%) — trend is declining. Bayesian-shrunk ROI (regressed toward -13% population baseline by sample size) is -23.5% — a more honest expectation than the raw -28.1%.
Since last weekly snapshot: ROI: -5.3% (-22.8% → -28.1%) · Shrunk ROI: -2.4% (-21.1% → -23.5%)

Charts

Cumulative P/L (theoretical $1 stakes)

A straight upward line = consistent profitability. Step-jumps = single fortunate bets carrying the curve.

Monthly ROI %

Top 10 P/L outliers

ROI by odds bracket

Calibration — actual vs implied win rate by odds

Blue bars under orange = picks lose to market expectations.

ROI by day of week

At a glance

Total Bets
115
Wins
23
Win Rate
20.0%
Avg Odds
5.08
Total P/L ($1 stakes)
$-32.35
ROI
-28.1%
Bayesian-shrunk ROI
-23.5%
Implied Win % (1/odds)
26.7%
Calibration Gap
-6.7pp

What's driving the ROI?

Strip away the top winning bets and see how the picture changes — a stable record degrades gracefully, a lucky record collapses.

SubsetNP/LROI
Full record115$-32.35-28.1%
Minus best 1 bet114$-42.35-37.1%
Minus best 2 bets113$-48.85-43.2%
Minus best 5 bets110$-61.85-56.2%

If stripping the top 2 wins materially changes the ROI, the headline number is being held up by a couple of fortunate longshots — not stable skill.

Recent trend

Last 30d ROI
-41.5%
Prior 60d ROI
-20.4%

Monthly performance

MonthNWin %Avg OddsP/LROI
2026-063122.6%4.41$-12.65-40.8%
2026-074223.8%5.00$-2.25-5.4%
2026-082920.7%6.11$-4.45-15.3%
2026-09130.0%4.63$-13.00-100.0%

By odds bracket

OddsNWin %P/LROI
<2.0728.6%$-3.70-52.9%
2.0-3.02941.4%$-0.15-0.5%
3.0-5.03411.8%$-18.00-52.9%
5.0-8.02814.3%$-4.50-16.1%
8.0-15156.7%$-4.00-26.7%
15+20.0%$-2.00-100.0%

By pre-race rank

Pre-race RankNWin %P/LROI
Rank 1 (fav)4032.5%$-8.85-22.1%
Rank 21729.4%+$3.40+20.0%
Rank 3258.0%$-14.80-59.2%
Rank 4-5248.3%$-5.50-22.9%
Rank 6+911.1%$-6.60-73.3%

Based on 115 of 115 tips where pre-race rank was captured live (data started May 17, 2026).

Strategy Zone (rank ≤ 3 AND odds ≥ 5)

SubsetNWin %P/LROI
In Zone (rank ≤ 3 AND odds ≥ 5)1816.7%$-2.00-11.1%
Outside Zone9720.6%$-30.35-31.3%

By source

SourceNWin %P/LROI
racing_com11520.0%$-32.35-28.1%

By venue

Top venues (by total P/L)

VenueNWin %P/LROI
pinjarra scarpside650.0%+$14.20+236.7%
kununurra825.0%+$3.30+41.2%
kalgoorlie714.3%$-5.00-71.4%
pinjarra park1323.1%$-5.25-40.4%
junction60.0%$-6.00-100.0%
bunbury812.5%$-6.00-75.0%
newman60.0%$-6.00-100.0%
belmont3324.2%$-7.70-23.3%

By day of week

DayNWin %P/LROI
Wed650.0%+$14.20+236.7%
Thu4918.4%$-25.15-51.3%
Sat5318.9%$-16.40-30.9%
Sun714.3%$-5.00-71.4%

Place market

Live place-capture data: 11 settled, place rate 72.7%.

Hypothetical $1 place-bet P/L at captured Betfair BSP: +$4.80 (+43.6% ROI) on 11 bets.

Place data started May 17, 2026. Sample size small — treat directionally only.

Biggest wins

DateVenueSelectionOddsP/L
2026-07-22pinjarra scarpsideSister Mary11.00+$10.00
2026-08-29kununurraVevinsky7.50+$6.50
2026-08-29belmontMain Act6.00+$5.00
2026-07-04belmontTwo Time Charlie5.00+$4.00
2026-07-22pinjarra scarpsideCountersunk5.00+$4.00

Biggest losses

DateVenueSelectionOddsP/L
2026-09-05junctionSoaring Solo3.90$-1.00
2026-07-23northamTag Time2.25$-1.00
2026-07-30bunburySpinarella4.80$-1.00
2026-07-22pinjarra scarpsideSuparoo8.00$-1.00
2026-06-27belmontMorning Thunder1.65$-1.00
Generated 2026-09-14 06:31 UTC. Stats based on theoretical $1 BACK stakes settled on Betfair. Place data uses captured Betfair Starting Price. ROI = total P/L divided by total bets — high variance at small samples.