Ascot Gold Cup antepost guide: Why is G1 winner "Sea Horse" an outsider?

Very few Royal Ascot antepost markets have been formed yet. One that has is the traditional showpiece event, the Ascot Gold Cup, whose extended trip of 2 miles and 4 furlongs makes it the least "valuable" of the Group 1 races of the week from a breeding / stallion-making standpoint.

From a betting perspective, by contrast, the Gold Cup has proved very valuable over the last decade to those who like a short price. Of the last ten editions, favourites have waltzed off with no less than seven trophies (Order of St George, Stradivarius x3, Kyprios x2, Trawlerman). What's more, on two of the three occasions where the hotpot has failed to deliver, the second favourite has stepped in to get the job done (Big Orange, Subjectivist). The only "outlier" to that trend of the favourite or second favourite bagging the loot came in 2023, when Courage Mon Ami was hardly a price for the ages (15/2 fourth favourite).

So will that trend hold true again in 2026?

Two big beasts dominate 2026 antepost market

The antepost market this year has a clear twin view of the most likely outcome. At the time of writing, only two horses were trading at a price shorter than 12/1 ten weeks out from the race: 2025 St Leger hero Scandinavia can be backed at 3/1, while defending Ascot Gold Cup champion Trawlerman is available at 7/2.

Do those prices represent any kind of value?

We are mildly surprised that the pair sit in that betting order. To our eyes Trawlerman should be the outright favourite. Unlike Scandinavia, he has been there, done that. And unlike the Gosdens' previous staying champion Stradivarius, there is little danger of Trawlerman suffering from misfortune in running as he makes his own luck from the front, cruising at a high tempo and grinding away at his rivals until their (an?)aerobic capacity can take no more. Moreover, he has become very consistent, having run to a Racing Post Rating of 120 or higher in each of his last four runs, emerging as the winner on each occasion. To be honest, he actually looks quite a fair bet to us at 7/2. We wouldn't put anyone off him at at that price.

Of course, Scandinavia was one of the stories of the 2025 flat season, and we are in no way denigrating the achievements of this horse. Winning a Goodwood Cup and a St Leger in the same season takes some doing. But assessment of value in a betting market always comes down to achievements divided by price, and at 3/1 it looks very much to us as if the "Ballydoyle premium" is priced into this fellow, with the market assuming that the next heir to Yeats, Order of St George and Kyprios is about to be crowned. Perhaps that's the case. But his narrow victory over Sweet William (lovable, no world-beater) at Goodwood was facilitated by the huge weight-for-age allowance (a stone!) enjoyed by three-year-olds, while the St Leger victory was likewise a very narrow one. As a newly turned four-year-old he looks to have plenty to prove.

Middle market alternatives?

Only one bookmaker has put in Jean-Claude Rouget's Arrow Eagle in their list of possible runners (Unibet, 12/1). We'd be doubtful about this horse travelling over for a marathon test on high summer ground, so he makes no appeal for now, but that's one to watch. On the subject of French horses, The AntePoster put up Candelari for last year's Ascot Gold Cup, but that recommendation didn't enrich our followers. To be fair, he looked a beaten horse far too early in the race for stamina to have been an issue on that occasion (high summer ground looks a more likely suspect), but he clearly had a gruelling experience and hasn't been seen on a racecourse since. We strongly doubt that connections will venture another cross-channel raid, so the current 16/1 looks about the right price for him to even turn up, let alone carry off the goldware.

More appealing at the prices would be Leger runner-up Rahieeb, who trades at a best price of 14/1, almost five times what you can get on Scandinavia. That's quite a hefty "discount" given that just a neck separated the pair on Town Moor in the final Classic of 2025. But Rahieeb too has questions to answer as a newly turned four-year-old aiming for the Ascot Gold Cup, including in his case the small matter of six furlongs further than he has ever run before. Unknowns there, albeit at a reasonable price. Possible.

The 16/1 available on Illinois looks very fair at first glance. Throw out his last run and you are left with the profile of an ultra-consistent middle-distance horse with sufficient stamina to finish 2nd in last year's Ascot Gold Cup on his only try at a marathon distance. That's not to be sniffed at. But there's the twin rub: Can that flop in the Irish St Leger be thrown out? Or might it be the case that Illinois' huge staying effort behind Trawlerman in June last year left an indelible mark, physically and/or possibly mentally? Perhaps he'll bounce back and make his current price look too big. But there must be a chance we've seen the best of Illinois.

Group 1 winner languishing in extreme price territory

All in all, while doffing our caps to Trawlerman as the reigning champion and most likely winner of this year's edition, and with an interested eye on the development of the 4-year-old Rahieeb, it is not until the antepost betting gets into loftier territory that we get truly excited.

What if we told you there was a Group 1 winner boasting an extraordinary run of improvement, with proven stamina for the trip and the distinct possibility of more to come as a newly turned 5-year-old?

Enter the Sea Horse. No, actually let's go with the Spanish translation: Caballo de Mar at 20/1. [IMPORTANT DEVELOPMENT: 33/1 MAY BE AVAILABLE WITH PADDY POWER AND SKYBET FOR A SHORT WINDOW]

Relentless upward trajectory since switch to staying trips

In the graph below, we plot the improvement of Caballo de Mar based on the Racing Post Ratings for every lifetime run since this son of Phoenix of Spain made his debut in June 2024:

The general (and rather obvious) point to make about Caballo de Mar's career as illustrated by these ratings is the remarkable trajectory of improvement. We have marked the first seven ratings in green as these illustrate his development before stepping up in trip beyond 12 furlongs: there is a broad pattern of improvement, but it is so gradual as to be virtually invisible on this graph with its wide scale.

Only over the next ten blue-coloured bars does this gelding's phenomenal rate of improvement when switched to staying trips become clear, apparently ending (but see below) with his victory in the G1 Prix du Cadran over 2 miles 4 furlongs – the Ascot Gold Cup trip, nota bene – in October last year. That performance bar is coloured in red.

Two explicable blots on the staying copybook

In short, from the moment when he was stepped up to staying trips right through to the end of last season, Caballo de Mar improved on his previous performance on every single occasion bar two, when he regressed (the two blue bars in the graph that show a decline from the previous race). But dig a bit deeper and it emerges that both those regressions have pretty clear explanations:

• Old Borough Cup, Haydock, 6 September: The bare finishing data records that he finished 8th of 15, beaten just under 5 lengths. Not terrible, but not great. However, the comments in running –– and we would encourage anyone to rewatch this race to get the full picture – make it clear that Caballo de Mar was at a terrible disadvantage due to a blindfold removal problem: Racing Post analysis: "Blindfold off late, slowly away, soon detached, joined main group after 4f, waiting for room over 2f out, headway in centre of group over 1f out, no extra final 110yds (jockey said that blindfold took two attempts to remove as gelding dropped his head)." Our evaluation is that George Scott's talented stayer might well have won that race under normal circumstances.

  
  

• Prix Royal-Oak, Saint-Cloud, 26 October: This was more than a regression, essentially a flop. Starting a short-priced 3rd favourite (16/5) in a tight cluster of three at the top of the market, Caballo de Mar's race was over quickly when it got to the business end. Racing Post analysis: "Prominent on outer, very briefly led after 4f, ridden from 2 1/2f out, unable to quicken, weakened and dropped towards rear over 1f out." He finished last of seven, beaten ten lengths. Why such a poor performance? For Scott, it was not just a case of reappearing just weeks after the Cadran (after all, Caballo de Mar has no less than nine gaps between races that are shorter than that turnaround, although 2 miles 4 furlongs is a test of a unique nature). As well as the gelding giving him the impression that things were not right before the race had started, Scott believes Caballo de Mar simply could not sustain a run on ground that was far removed from the soft conditions he had encountered in the Cadran (despite an identical French going description). Scott: "The ground that day was the worst he has ever run on: It was deep, it was gluey, it was sticky – it was simply horrible ground."

Following the end-of-season disappointment in the Prix Royal-Oak three weeks later (solitary blue bar in the graph, two from right) Caballo de Mar then enjoyed a seasonal break, returning for his 2026 campaign in Dubai with a fine 2nd in the G2 Dubai Gold Cup, for which he earned an RPR of 115 (brown final bar on graph), just a couple of points below his Cadran win. As that run came off a 5-month break, to almost match his best-ever RPR figure was notable and has paved the way for a staying campaign at the top level.

How much further can he progress? Scott doesn't know, and of course neither do we. But as a 5-year-old Caballo de Mar is probably only now reaching his peak, and further progression is distinctly possible. Some of the traits needed for a Gold Cup – the ability to settle and for a horse to run comfortably within himself in the teeth of even a fast pace – are a quintessential hallmark of this gelding, whose heart rate data is (in the words of his trainer) "quite unique". There is still a palpable sense of excitement around this horse.

The Ascot Gold Cup is now the clear stated target. The intended pathway is the Sagaro Stakes at the same venue for his second outing of the season, and then (possibly but not definitively) one further race prior to the Royal Meeting.

Fast summer ground remains a slight question mark

The usual antepost risk aside, anyone betting on Caballo de Mar should be aware that he has not conclusively proved himself on fast summer ground. Only in last season's Copper Horse handicap at Royal Ascot has this gelding encountered such ground since being targeted at staying trips, and while coming second (to French Duke) in a competitive field at Britain's most prestigious flat meet is no disgrace – and for good measure we would argue Caballo de Mar's run should be marked up slightly as he didn't get as clear a run in the final straight as the winner – Scott is convinced his charge wasn't able to show his very best that day. Indeed, he has confided to The AntePoster that rattling fast ground in a heatwave is the last thing he would wish for this horse in the third week in June. Given that such conditions can easily occur during the Royal Meeting, this is a risk punters need to accept with eyes wide open.

We are happy to embrace that risk, as we believe 20/1 for Caballo de Mar to prove himself top dog in the staying division is all wrong. This price is currently available with two large, unconnected bookmakers (Bet365 and Ladbrokes). The only question remaining for readers interested in this horse is how to play him: win-only is the logical purist angle, but we go contrarian when the price is right and see this horse as having such a good chance of placing at worst (average field size last eight years: 10) that we have backed him each-way. That's what will go on our P'n'L.

Recommendation for Ascot Gold Cup, Thursday 18 June 2026:

[IMPORTANT DEVELOPMENT: 33/1 MAY BE AVAILABLE WITH PADDY POWER AND SKYBET FOR A SHORT WINDOW]

Back Caballo de Mar each-way at 20/1 with Bet365 or Ladbrokes. We're not so interested each-way when he's cut to 16s, but a win bet at that level is fine.