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Lizzie Jelfs
Tipster dossier — settled-bet performance through 2026-06-05 22:16 UTC
Verdict
STRUCTURALLY LOSING
Small sample (4 bets) — anything below ~100 settled bets means CIs are wide enough to be near-useless. Calibration is roughly neutral: actual win rate 50.0% vs implied 49.3% (+0.7pp). Picks track market expectations. Bayesian-shrunk ROI (regressed toward -13% population baseline by sample size) is -14.2% — a more honest expectation than the raw -28.7%.
Since last weekly snapshot: ROI: +14.3% (-43.0% → -28.7%) · Shrunk ROI: +1.6% (-15.7% → -14.2%)
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 P/L ($1 stakes)
$-1.15
Bayesian-shrunk ROI
-14.2%
Implied Win % (1/odds)
49.3%
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.
(insufficient data)
Recent trend
(insufficient sample to compare recent vs prior)
Monthly performance
| Month | N | Win % | Avg Odds | P/L | ROI |
|---|
| 2026-03 | 4 | 50.0% | 3.17 | $-1.15 | -28.7% |
By odds bracket
| Odds | N | Win % | P/L | ROI |
|---|
| <2.0 | 2 | 100.0% | +$0.85 | +42.5% |
| 2.0-3.0 | 1 | 0.0% | $-1.00 | -100.0% |
| 5.0-8.0 | 1 | 0.0% | $-1.00 | -100.0% |
By pre-race rank
No pre-race rank data yet for this tipster.
Strategy Zone (rank ≤ 3 AND odds ≥ 5)
No rank data yet.
By source
| Source | N | Win % | P/L | ROI |
|---|
| sen_tips | 4 | 50.0% | $-1.15 | -28.7% |
By venue
(no venue data with sufficient samples)
By day of week
| Day | N | Win % | P/L | ROI |
|---|
| Sat | 4 | 50.0% | $-1.15 | -28.7% |
Place market
No place outcomes captured yet for this tipster.
Biggest wins
| Date | Venue | Selection | Odds | P/L |
| 2026-03-20 | rosehill | Aeliana | 1.55 | +$0.55 |
| 2026-03-20 | rosehill | Autumn Glow | 1.30 | +$0.30 |
Biggest losses
| Date | Venue | Selection | Odds | P/L |
| 2026-03-20 | rosehill | Streisand | 7.50 | $-1.00 |
| 2026-03-20 | rosehill | Observer | 2.35 | $-1.00 |
Generated 2026-06-05 22:16 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.