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Darren McAullay
Tipster dossier — settled-bet performance through 2026-07-14 20:15 UTC
Verdict
STRUCTURALLY LOSING
Calibration is roughly neutral: actual win rate 34.0% vs implied 33.3% (+0.7pp). Picks track market expectations.
Bio & context
Darren McAullay is Western Australia's premier race caller and a prominent racing media personality, not primarily a professional tipster. Known as "the voice of WA racing," he has been calling races since 1979 (40+ years tenure) and provides tips through Sky Racing as part of his broader broadcasting role. He also serves as Executive Officer of the Western Australian Racehorse Owners Association (WAROA), which represents a significant potential conflict of interest given his dual role as tipster and advocate for horse owners.
Western Australia (Perth/Belmont)Race caller / broadcaster (TABradio lead caller since mid-1990s); tips as secondary activity through Sky Racing45 yrs
⚠ Conflict / insider flags
- CRITICAL: Serves as Executive Officer of WAROA (Western Australian Racehorse Owners Association) since at least 2009 - advocates for horse owners while tipping. Direct institutional conflict.
- As WAROA Executive Officer, has direct contact with all major WA owners, trainers, and industry stakeholders - potential for insider information
- Works closely with RWWA management (Racing and Wagering Western Australia)
- Runs private media company (Macmedia Marketing) - may have commercial relationships with industry participants
- Father was jockey; deep family connections to WA racing industry since childhood
- Tips almost exclusively on WA racing where he has strongest industry connections
Methodology: Form-based analysis drawing on deep knowledge of WA racing from decades as caller and industry insider; tips focus heavily on WA tracks (Bunbury, Pinjarra, Ascot)
Specialty: Western Australian thoroughbred racing; also covers harness and greyhounds in tipping
Public footprint
- Twitter/X: @DarrenMacmedia (1,198 followers, joined April 2013, inactive posting)
- TABradio lead race caller (since mid-1990s)
- Sky Racing tipster and media personality
- TheGreatTipOff platform (9,255+ tips published since July 2009)
- TABradio's breakfast show 'The Sports Daily' regular
- Owns Macmedia Marketing (media company)
- WAROA 'Winners Circle' newsletter editor/contributor
- Appearances on SEN Track
- Racing.com features
Industry connections
- Bob and Sandra Peters (major WA owner-breeders) - frequently mentioned in his calls
- William Pike (prominent WA jockey) - synonymous with WA racing
- Racing and Wagering Western Australia (RWWA) - works with Wes Cameron, Manager of Racing Communications
- Harvey Crossman (WAROA President) - close working relationship for over a decade
- Father was apprentice jockey for trainer George Grljusich
Public track-record claims
- $1,570 profit / 58% POT in a weekly period (Feb 2021) - marketing claim from TheGreatTipOff
- $3,200 profit over 30 days (April 2020) - marketing claim from TheGreatTipOff
- 9,255 tips published since July 2009 with 11% profit on turnover - TheGreatTipOff stats (marketing)
- Average winner odds $3.22, highest winner $18.40 - TheGreatTipOff stats
Source: anthropic_web_search · last researched 2026-07-01
Since last weekly snapshot: ROI: -1.1% (-9.1% → -10.2%) · Shrunk ROI: -1.1% (-9.7% → -10.8%) · Verdict: BREAK-EVEN / MARGINAL → STRUCTURALLY LOSING
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)
$-20.72
Bayesian-shrunk ROI
-10.8%
Implied Win % (1/odds)
33.3%
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.
| Subset | N | P/L | ROI |
|---|
| Full record | 203 | $-20.72 | -10.2% |
| Minus best 1 bet | 202 | $-27.92 | -13.8% |
| Minus best 2 bets | 201 | $-33.92 | -16.9% |
| Minus best 5 bets | 198 | $-49.22 | -24.9% |
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
Monthly performance
| Month | N | Win % | Avg Odds | P/L | ROI |
|---|
| 2026-04 | 27 | 29.6% | 3.77 | $-0.60 | -2.2% |
| 2026-05 | 72 | 30.6% | 5.58 | $-20.80 | -28.9% |
| 2026-06 | 71 | 39.4% | 3.75 | $-3.37 | -4.7% |
| 2026-07 | 33 | 33.3% | 4.13 | +$4.05 | +12.3% |
By odds bracket
| Odds | N | Win % | P/L | ROI |
|---|
| <2.0 | 33 | 63.6% | +$0.43 | +1.3% |
| 2.0-3.0 | 61 | 45.9% | $-0.35 | -0.6% |
| 3.0-5.0 | 55 | 23.6% | $-11.30 | -20.5% |
| 5.0-8.0 | 36 | 19.4% | +$8.50 | +23.6% |
| 8.0-15 | 12 | 0.0% | $-12.00 | -100.0% |
| 15+ | 6 | 0.0% | $-6.00 | -100.0% |
By pre-race rank
| Pre-race Rank | N | Win % | P/L | ROI |
|---|
| Rank 1 (fav) | 69 | 55.1% | +$10.28 | +14.9% |
| Rank 2 | 38 | 15.8% | $-15.00 | -39.5% |
| Rank 3 | 10 | 30.0% | +$8.00 | +80.0% |
| Rank 4-5 | 13 | 7.7% | $-6.00 | -46.2% |
| Rank 6+ | 5 | 0.0% | $-5.00 | -100.0% |
Based on 135 of 203 tips where pre-race rank was captured live (data started May 17, 2026).
Strategy Zone (rank ≤ 3 AND odds ≥ 5)
| Subset | N | Win % | P/L | ROI |
|---|
| In Zone (rank ≤ 3 AND odds ≥ 5) | 23 | 13.0% | $-5.00 | -21.7% |
| Outside Zone | 112 | 40.2% | $-2.72 | -2.4% |
By source
| Source | N | Win % | P/L | ROI |
|---|
| racing_com | 203 | 34.0% | $-20.72 | -10.2% |
By venue
Top venues (by total P/L)
| Venue | N | Win % | P/L | ROI |
|---|
| rockingham | 7 | 57.1% | +$6.10 | +87.1% |
| ascot | 16 | 37.5% | $-0.20 | -1.3% |
| pinjarra scarpside | 9 | 44.4% | $-0.57 | -6.3% |
| york | 6 | 33.3% | $-1.50 | -25.0% |
| bunbury | 7 | 28.6% | $-2.75 | -39.3% |
| belmont | 111 | 36.0% | $-3.10 | -2.8% |
| pinjarra park | 17 | 23.5% | $-4.75 | -27.9% |
| northam | 15 | 33.3% | $-4.95 | -33.0% |
By day of week
| Day | N | Win % | P/L | ROI |
|---|
| Wed | 55 | 32.7% | $-3.70 | -6.7% |
| Thu | 46 | 28.3% | $-21.32 | -46.3% |
| Sat | 80 | 36.2% | $-5.55 | -6.9% |
| Sun | 22 | 40.9% | +$9.85 | +44.8% |
Place market
Live place-capture data: 11 settled, place rate 63.6%.
Hypothetical $1 place-bet P/L at captured Betfair BSP: $-0.60 (-5.5% ROI) on 11 bets.
Place data started May 17, 2026. Sample size small — treat directionally only.
Biggest wins
| Date | Venue | Selection | Odds | P/L |
| 2026-04-19 | geraldton | Blue Lupin | 7.50 | +$7.20 |
| 2026-05-30 | belmont | The Calabrese | 7.00 | +$6.00 |
| 2026-06-17 | belmont | Enchanted Miss | 6.50 | +$5.50 |
| 2026-07-02 | pinjarra park | Bannered | 6.00 | +$5.00 |
| 2026-04-19 | geraldton | Sneaky Session | 5.50 | +$4.80 |
Biggest losses
| Date | Venue | Selection | Odds | P/L |
| 2026-04-30 | geraldton | Deep Discretion | 1.95 | $-3.00 |
| 2026-04-30 | geraldton | Awesome Lily | 4.20 | $-3.00 |
| 2026-05-03 | northam | Belaura Star | 2.25 | $-3.00 |
| 2026-04-30 | geraldton | Kallahti | 3.80 | $-3.00 |
| 2026-04-19 | geraldton | Playing Games | 3.60 | $-3.00 |
Generated 2026-07-14 20:15 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.