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This horse is barred from running in Cup week after failing a drug test – that its trainer requested

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Cite

Russell, D., & Snowden, A. (2026, November 1). This horse is barred from running in Cup week after failing a drug test – that its trainer requested. The Sydney Morning Herald. https://www.smh.com.au/sport/racing/this-horse-is-barred-from-running-in-cup-week-after-failing-a-drug-test-that-its-trainer-requested-20261101-p61adw.html?ref=rss&utm_medium=rss&utm_source=rss_feed

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The Sydney Morning Herald · collected 2026-11-01 · by Danny Russell, Angelica Snowden

Quick Summary

A horse named Major Share has been barred from running in Melbourne Cup week after failing a drug test for formestane, a substance whose presence in horses remains unexplained by the racing industry. This is the second time within 12 months that Major Share has tested positive for formestane, leading to its disqualification and disappointment among up to 50 country-based owners who were set to attend Flemington. The trainer, Adam Chambers, had voluntarily requested the test in an attempt to clear the horse for racing. Racing Victoria enforces a strict ban on any positive test for this substance, citing Australian rules of racing.
Written by AI on 2026-11-01, from this article's own text only (the story summary below draws on all the coverage).

AI analysis

Story summary

The horse named Major Share is barred from running during Cup week after failing a drug test for formestane, a mysterious substance that first appeared nearly four years ago. This is the second time Major Share has tested positive within 12 months, disqualifying it from racing on Oaks Day. Up to 50 owners are disappointed as their plans to attend the races at Flemington have been dashed. The owners claim formestane occurs naturally in minute doses and shouldn't affect the horse's eligibility to race. Retired school teacher Greg May stated that Major Share is "the best horse" he has ever owned, emphasizing his disappointment with the ban.

Written for “Horse Barred From Race For Drug Violation” on 2026-11-01, grounded in this article and the 0 other(s) covering the same event.
Why this leaning score
The article's own words the score was based on. Each is quoted verbatim and was checked against the article text before being stored, so you can find it in the original.
Reading Leans left (beta estimate) Confidence medium 1 quote(s) discarded as not found in the article
Leaning: leans left for article 120885 (medium confidence, 2 verified quotes) · logged 2026-11-01

Story

📰 Horse Barred From Race For Drug Violation
Sports · 1 article(s) covering the same event.

Compared with similar articles

This article reads leans left and hedges 18% of its claims. Each row says how that neighbour differs.
The Sydney Morning Herald
Hedges 0 of 12 claims Outlet record 61/100
“The articles describe different horses failing veterinary tests for unrelated issues around the Melbourne Cup, not the same specific incident.”
How this article was measured signals, leaning charts, publisher record, byline, topics and claims

Signals How these are calculated →

Claims extracted
55
sentences that state something as happening or true
Uncertain
18%
10 of 55 hedged ("reportedly", "may", "according to")
Leaning
Leans left
of the writing, not the subject · beta estimate
Publisher signals
61/100
The Sydney Morning Herald's corrections and hedging, across everything collected from it. Not a measure of accuracy.
Outlets on this story
1
Sports
Same framing elsewhere
1
articles that frame the event the way this one does
Analyzed 2026-11-01 · how these are computed

How this is being covered How these are calculated →

Article leaning vs. publisher reliability
Source leaning vs. consistency

Publisher

The Sydney Morning Herald · 5731 article(s) · 15 correction(s) detected
Running correction rate · 15 correction(s)

Who wrote this

Danny Russell
33 article(s) here · 1 carrying a prediction
🔮 “I’ve been involved in horses in one form or another for 50 years, and this is the best horse I’ve ever been involved in, by a considerable margin,” retired school teacher Greg May told this masthead.
🔮 The Joseph O’Brien stayer has set European racing alight in the past six months by adopting daring catch-me-if-you can tactics and was expected to turn Tuesday’s 3200m race at Flemington into a gruelling test of stamina that would suit the Europeans.
🔮 A 5am start will be trialled after the spring carnival.
🔮 The winner of one, he says, will become a household name.
🔮 This guide will be updated when the field is set with comments from Melbourne Cup-winning jockey Michelle Payne assessing each runner’s chances.
🔮 As trainer Andrea Leek, who operates stables in Nar Nar Goon North, celebrated becoming the first woman in 32 years to win Australia’s weight-for-age championship with West Australian star Cosmic Crusader, the dual Brownlow winner and his Carlton crew were left to wonder what might have been.
🔮 One of the country’s finest trainers will set foot on the vast green lawns at Flemington on Saturday with a serious Cox Plate chance and mixed emotions.
🔮 That would take Waller’s total victories in the race to seven and McDonald to five.
🔮 Zahra is waiting on medical advice to be cleared to resume riding, but will miss Saturday’s Cox Plate day, while McNeil has been given the all-clear.
🔮 But what we are missing now is the “coroner’s report”; information that goes beyond those in-race mechanics and more deeply into the other factors that may have had an impact on the day.
Also by Danny Russell
Another shock scratching three days out from Melbourne Cup
2026-10-30 · The Sydney Morning Herald
Nothing else under this byline is closely related to this article, so these are simply their most recent.
All 33 articles by Danny Russell →
Angelica Snowden
17 article(s) here · 1 carrying a prediction
🔮 “I’ve been involved in horses in one form or another for 50 years, and this is the best horse I’ve ever been involved in, by a considerable margin,” retired school teacher Greg May told this masthead.
🔮 Fenton will be replaced by Judith Swales, current chair of Super Retail Group.
🔮 Former New York City mayor Bill de Blasio has implored Melburnians to embrace high-rise, high-density living as the city’s population races towards 9 million.
🔮 Community groups lost their campaign in 2018 to stop the site from being redeveloped into warehouses despite arguing that works may disturb the cap and allow leftover toxic waste to leach out. Now, an application has been made to Merri-bek Council to grant a permit for concrete slabs and shipping containers that were already installed on the land, which backs on to Merri Creek.
🔮 “When you’ve gone from nothing … to something like that, there’s a bit of imposter syndrome, there’s a fear that one day something could happen, the bubble could burst and the dream could be over,” he told a NZ podcast in 2024.
🔮 The 46-year-old Victorian would spend the next four nights behind bars in Queensland.
🔮 Wood’s lawyer has indicated the 46-year-old would defend the charges.
🔮 As the city’s population races to nine million, strata-titled apartments will be a key housing option for inner-city living.
🔮 Wood did not appear in court in Queensland on Monday, and he will remain behind bars until a bail application on Thursday.
🔮 Hospital overcrowding and ambulance ramping would be eased by a “transit lounge” scheme to shift patients out of emergency department beds sooner, the state opposition said in its latest election pledge.
Also by Angelica Snowden
Nothing else under this byline is closely related to this article, so these are simply their most recent.
All 17 articles by Angelica Snowden →

Topics

Australia Cox Plate day Cup Major Share Oaks Day

Subjects

Racing Victoria ORG · 4× Chambers ORG · 2× May PERSON · 2× Adam PERSON · 1× Adam Chambers PERSON · 1× Australia GPE · 1× Greg May PERSON · 1× Hamilton GPE · 1× Major Share ORG · 1× Warrnambool GPE · 1×

Narrative

This time around, up to 50 owners have had their Cup week dreams ruined because their horse Major Share has produced a left-field positive to formestane – a mysterious substance that popped out of nowhere almost four years ago and which has baffled the racing industry ever since.
framing: assertive · carried by 1 article(s) · first seen 2026-11-01
🔮 “I’ve been involved in horses in one form or another for 50 years, and this is the best horse I’ve ever been involved in, by a considerable margin,” retired school teacher Greg May told this masthead.

Claims (55 extracted, 10 hedged)

Blinkers On is a weekly column covering the biggest issues of the spring racing carnival. asserted
Blinkers → cover → carnival
It is the last thing racing needed on the eve of Melbourne Cup week – another group of unsuspecting victims caught up in racing’s breast cancer drug saga. asserted
racing → need → saga
This time around, up to 50 owners have had their Cup week dreams ruined because their horse Major Share has produced a left-field positive to formestane – a mysterious substance that popped out of nowhere almost four years ago and which has baffled the racing industry ever since. asserted
which → have → industry
It is the second time Major Share has thrown a positive swab in 12 months and as a result, their talented gelding can’t run on Oaks Day. asserted
gelding → throw → Day
To say the large cohort of country-based owners are gutted is an understatement. asserted
cohort → say → owners
One minute they are booking their tickets to Flemington, the next they are packing away their suits. asserted
they → book → suits
“I’ve been involved in horses in one form or another for 50 years, and this is the best horse I’ve ever been involved in, by a considerable margin,” retired school teacher Greg May told this masthead. uncertain
May → involve → masthead
“To not be able to see him race because of something, which all the evidence points to occurs naturally and in minute doses, so it has no impact on his physical performance whatsoever, is incredibly frustrating. asserted
it → see → performance
“We’ve got another six or eight weeks of bills to pay with no possible chance of getting any prizemoney back, and it’s not [trainer] Adam Chambers’ fault. asserted
it → get → prizemoney
“If anything, I think Adam is more of a victim in this than the owners because his reputation has been impinged.” asserted
reputation → think → owners
Major Share was due to return this week after 12 months out. asserted
Share → return → months
It first tested positive at Moonee Valley on Cox Plate day last year. asserted
It → test → day
No one has ever been able to explain why. asserted
one → explain → ?
The substance is produced naturally by horses as it is in humans, or it is a performance-enhancing supplement. asserted
it → produce → humans
In this case, as in all the mystery cases, owners have backed their trainers. asserted
owners → back → trainers
They all circle back to UK research that points to the substance being exogenous – naturally occurring. asserted
substance → circle → research
Sadly for them, the research is still yet to be peer-reviewed and published, so cannot be used in evidence. asserted
research → review → evidence
But here’s what sets this latest case apart: it was a voluntary test. asserted
it → ’ → ?
Warrnambool-based Chambers organised for the swab to be taken so that Major Share could be cleared to return to racing. uncertain
Share → base → racing
He drove the horse to Hamilton races seven weeks ago to provide the urine sample. asserted
He → drive → sample
It is hard to believe a trainer would set himself up to fail. asserted
trainer → believe → himself
A bitter pill to swallow When it comes to formestane, which is used in some countries to treat breast cancer, Racing Victoria continues to hide behind the rules. asserted
Victoria → swallow → rules
RV says a horse must be banned for 12 months if it throws up a positive at a race meeting, trial or jumpouts. asserted
it → say → meeting
The organisation says it is bound by the Australian rules of racing, and cannot make state-based exceptions. asserted
it → say → exceptions
It is a bitter pill for connections to swallow. “I can tell you that there are owners of Major Share who won’t be investing again in horses because of the way we’ve been treated,” May said. uncertain
May → swallow → way
So far, 13 Victorian stables have had horses disqualified since February 2023. asserted
horses → have → February
All have protested their innocence. asserted
All → protest → innocence
“It is something that we have no control over, no trainer has any control over, and Racing Victoria has dropped the ball in terms of amending the rules to say, ‘well, we accept that trainers aren’t doing it. asserted
trainers → have → it
It occurs naturally’,” May said. uncertain
May → occur → ?
“Surely, it’s within their powers to say, ‘we’ll either stop swabbing for it or put any penalties on hold until the scientific evidence from their research is finalised’.” asserted
evidence → ’ → research
At least in this latest case, Major Share will not be rubbed out because Chambers requested the sample outside a race, trial or jumpout. asserted
Chambers → rub → race
Meanwhile, we have to wait. asserted
we → have → ?
Racing Victoria told this masthead it has commissioned its own research. asserted
it → tell → research
Racing Analytical Services Laboratory, which is part-owned by Racing Victoria, will conduct a global study of more than 15 target compounds including formestane, 4-hydroxytestosterone, 6a-hydroxyandrostenedione and DHEA. asserted
which → own → formestane
The study will take 12 months. asserted
study → take → months
By then, Major Share might be cleared to run on Oaks Day. uncertain
Share → clear → Day
More than 88,000 people flocked to Flemington and largely avoided the forecast rain. asserted
people → flock → rain
Those who spent the day in the precinct’s nursery carpark were left feeling unloved. asserted
who → spend → carpark
They said drivers had to wait more than an hour to enter that section of the course to set up their catering for the day; those on foot had to wait more than an hour to pass through the limited number of turnstiles; and there were not near enough toilet facilities. asserted
those → say → turnstiles
Interestingly, these issues might have ramifications at the coming Victoria Racing Club elections. uncertain
issues → have → elections
…and 15 more, not listed.
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