Royal Ascot has seen its fair share of controversial stewarding decisions over the years, but the aftermath of this year’s St James’s Palace Stakes provided one of the clearest examples yet of the British Horseracing Authority’s determination to stamp out team tactics.

The race itself was a cracker. Bow Echo narrowly maintained his unbeaten record, fending off the persistent challenge of Gstaad, while Talk Of New York emerged with plenty of credit in third. Yet the talking point afterwards had little to do with the winner.

Instead, attention focused on Ballydoyle pair Gstaad and Puerto Rico.

Most racing fans accept that powerful yards often run multiple horses in the same race. That’s nothing new. The issue arises when one horse appears to be ridden in a way that benefits another stablemate rather than improving its own finishing position.

The BHA’s rules are quite clear on this point. A jockey must not ride in a way that is intended to give an advantage to another horse from the same stable or ownership group. Pacemakers are allowed, but assisting a stablemate during the race is not.

Following an enquiry, the stewards concluded that Christophe Soumillon, riding Puerto Rico, crossed that line.

Their view was that Puerto Rico moved away from the rail and, in doing so, created a gap on the inside that allowed Gstaad a clear passage. The official wording was damning. The stewards believed the manoeuvre was intended to benefit Gstaad, and Soumillon was handed an eight-day suspension.

That penalty was significantly more severe than the three-day suspension given to Ryan Moore, whose careless riding shortly after the start caused interference. The difference is important. Careless riding is one thing. Deliberately helping a stablemate is another.

The Racing Post analysis did not pull any punches either, describing it as a “clear case of team tactics”. Their report noted that Gstaad had taken advantage of a “manufactured gap” before launching his challenge at the winner.

The obvious question from punters is why Gstaad was allowed to keep second place.

The answer lies in how the rules are framed. The offence was committed by Puerto Rico’s rider, not by Gstaad himself. The stewards judged that Gstaad had run on his merits and that Ryan Moore had ridden his own race. As a result, the horse’s placing remained unchanged while the punishment fell on the jockey responsible for the breach.

For the BHA, this case feels significant because it sends a message to every trainer, owner and jockey operating in Britain.

Pacemaking remains perfectly legal. Sending one horse forward to ensure a strong gallop has long been part of racing tactics and is specifically allowed under the rules.

What is not allowed is creating runs, blocking rivals, or sacrificing one horse’s chance to improve another’s.

The distinction may sound subtle, but the BHA believes it is vital to maintaining public confidence in racing.

Whether everyone agrees with the stewards’ interpretation is another matter. Racing is a fast-moving sport where split-second decisions are made under pressure. Not every movement on a racecourse is part of a grand plan.

However, after studying the footage and interviewing the riders involved, the stewards were satisfied that Puerto Rico’s actions went beyond normal race riding.

The result is likely to be remembered not just because Bow Echo confirmed himself one of the leading milers of his generation, but because the race produced one of the most high-profile applications yet of Rule 46 – the rule designed to prevent horses from being used to help their stablemates.

For racing’s regulators, the message could hardly be clearer.

Pacemaking is acceptable.

Creating opportunities for a stablemate is not.This is the sort of incident that will be debated for years because it strikes at the heart of a question punters always ask: when does stable strategy become unfair team tactics? This Ascot case has given the BHA’s answer in very public fashion.