Commentator Stakes Preview: Vibe Coding a New Betting App for the Belmont Stakes Racing Festival

Iron Dome in the 2025 Albany Stakes, Angelo Lieto Photo

Jim Gazzale

One of the more entertaining side projects I’ve found myself immersed in lately is vibe coding a horse racing betting app.

The idea isn’t to replace handicapping. If anything, it’s the opposite. The goal is to see whether a machine arrives at the same conclusions an experienced horseplayer might after studying past performances, pace scenarios, speed figures, and class levels. Every race becomes a test.

Wednesday’s Commentator Stakes at Saratoga offers a particularly fascinating case study.

On paper, this nine-furlong New York-bred stakes has a little bit of everything: a likely pace battle, a dangerous closer, a classy veteran trying to rediscover old form, and a favorite whose versatility makes him exceptionally difficult to dismiss.

After running the race through the latest version of the app, one horse emerged as the clear leader. But perhaps more importantly, the probabilities reveal where the public and the numbers may disagree.

Commentator Stakes Win Probabilities

At first glance, the numbers suggest this race runs through three primary contenders: Iron Dome, Bank Frenzy, and Donegal Surges.

Each arrives at that status through a very different path.

Iron Dome Checks Every Box

If you’re looking for the horse with the fewest excuses and the fewest questions, start with Iron Dome.

The app gives him a race-high 28.5% chance of winning, and it’s difficult to argue with the logic.

Unlike many horses who need a specific trip to perform their best, Iron Dome is remarkably adaptable. He can lead if nobody wants the front. He can stalk if speed develops. He can sit farther back if the race gets chaotic. That tactical versatility is often one of the most valuable weapons a horse can possess, particularly in a race where the pace appears far from settled.

His recent speed figures stack up favorably against the rest of the field, and his ability to sustain that speed throughout a route race separates him from many of his rivals.

The most likely scenario sees Quick to Accuse and Bank Frenzy mixing it up early while Iron Dome settles comfortably just behind them. If that happens, he’ll be sitting in the ideal spot when the field begins to turn for home.

Bank Frenzy Holds the Keys

Sometimes the most dangerous horse isn’t necessarily the most likely winner.

Sometimes it’s the horse capable of making everyone else’s race miserable.

That distinction belongs to Bank Frenzy.

The app assigns him an 18.5% chance of winning, second only to Iron Dome, and much of that stems from his natural speed. He owns some of the fastest races in the field and has demonstrated the ability to carry that speed a long way when allowed to dictate terms.

The challenge is that Wednesday’s race doesn’t appear likely to hand him an uncontested lead.

Quick to Accuse possesses similar early ambitions, and a prolonged battle through the opening stages could compromise both runners before the serious running begins.

Still, if Bank Frenzy shakes loose early or manages to establish a comfortable rhythm, his chances improve dramatically. Bettors backing him are essentially wagering that the pace battle never materializes.

Donegal Surges Could Get the Last Laugh

While the front-runners are busy sorting things out, Donegal Surges will likely be doing what he does best: waiting.

The deep closer receives a 16% win probability from the app, making him the third-most-likely winner despite a running style that requires patience and cooperation from the pace.

Fortunately for his supporters, cooperation seems likely.

The projected race shape points toward a hot early tempo, which is precisely what closers want to see. Every stride spent dueling up front becomes fuel for the horses charging from behind.

Donegal Surges enters in excellent form following consecutive victories and appears to be improving at the right time. The additional furlong only strengthens his case, giving him more distance over which to unleash his late kick.

If the speed horses soften one another up through the opening mile, don’t be surprised if Donegal Surges is the one flying past tired rivals in the final sixteenth.

What About Wynstock?

One of the more intriguing names in the field is Wynstock.

The son of Solomini owns enough back class to attract attention from handicappers and casual fans alike. There was a time when Wynstock was competing successfully against much tougher company, and that kind of résumé often earns respect long after the races have been run.

The app, however, remains skeptical.

Its current projection gives Wynstock only a 4.5% chance of winning, making him one of the more significant underlays in the field based on expected wagering support.

That doesn’t mean he can’t win. Horses aren’t spreadsheets, and racing has a wonderful habit of humbling anyone who thinks they have everything figured out.

Admittedly, I have a soft spot for the family.

Not that long ago, I had the opportunity to edit a promotional video highlighting Wynstock’s sire, Solomini, and his growing impact as a stallion.

If Wynstock can rediscover the form that once made him a graded stakes winner, he’ll make the app look pretty silly. But based strictly on recent performances, the numbers suggest bettors may be paying for accomplishments that are becoming increasingly distant in the rearview mirror.

Where Might the Value Be?

Perhaps the most interesting takeaway from the exercise isn’t identifying the most likely winner.

It’s identifying where the market may be wrong.

Quick to Accuse is particularly interesting.

The app doesn’t view him as one of the most likely winners, but it does believe he’s more dangerous than his 20-1 morning line suggests. If he somehow avoids a prolonged speed duel and secures a comfortable lead, the upset potential becomes very real.

Three Horses I’d Use

Iron Dome – The horse to beat. His tactical versatility, consistent speed figures, and projected trip make him the most logical winner. He doesn’t need things to go perfectly, which is often the hallmark of a strong favorite.

Donegal Surges – The horse I’d want on my tickets if the pace gets heated. His recent form is excellent, and the race shape appears tailor-made for his late-running style.

Bank Frenzy – The wildcard. His raw talent and speed make him dangerous, but his success may depend entirely on how much pressure he faces during the opening half-mile.

The Bottom Line

One of the fun surprises of building a betting app has been discovering how often the numbers reinforce traditional handicapping principles.

Pace still matters.

Class still matters.

Trip still matters.

And Wednesday’s Commentator Stakes looks like a race where all three could intersect at exactly the right moment for Iron Dome.

The app says he’s the most likely winner. The projected pace scenario says he’ll get the right setup. The speed figures say he belongs.

Of course, this is Saratoga, where certainty has a funny way of disappearing somewhere between the paddock and the finish line.

That’s why they run the race.

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