When Marcelo Bielsa and Leeds United became embroiled in the infamous ‘Spygate’ scandal back in January 2019, many thought their publication was enough to never see the like again. In 2026, along came Tonda Eckert and Southampton.

At the time, the controversy centred as much around ethics as it did regulations. Bielsa openly admitted that a member of his staff had been caught observing a closed Derby County training session ahead of a Championship clash between the two sides, prompting outrage across English football.

The key difference between that incident and the situation now involving Southampton is that Bielsa did not technically break a specific anti-spying rule at the time because one simply did not exist within the EFL rulebook.

Instead, Leeds United were punished under broader regulations relating to acting in “utmost good faith” towards fellow member clubs, with the EFL ultimately issuing a £200,000 fine after determining Bielsa’s actions had gone “against the spirit of the game”.

The EFL rule changes after Leeds United’s spygate incident under Marcelo Bielsa

Marcelo Bielsa - Leeds United

That distinction is hugely important when analysing the current controversy involving Southampton in May 2026. Unlike Bielsa seven years earlier, Southampton are alleged to have breached a direct and explicit regulation that was introduced largely because of the fallout from the Leeds scandal itself.

In many ways, Bielsa’s actions forced the EFL into closing a loophole that previously existed in the regulations. Following the uproar surrounding Leeds and Derby, the EFL amended its rulebook to specifically outlaw clubs from observing opposition training sessions within 72 hours of a fixture unless they have permission from the opposing club.

The rule was designed to remove ambiguity and prevent future arguments over whether such behaviour merely crossed a moral line or actually constituted a punishable offence. The wording now included in EFL regulations makes the position far clearer than it was during Bielsa’s time at Elland Road.

Clubs are prohibited from directly or indirectly watching, filming, or gathering tactical information from private training sessions in the 72-hour period leading up to a match. The introduction of that rule effectively turned what had previously been considered an ethical grey area into a clear disciplinary matter.

What are your thoughts on Spygate 2.0? Comment below!

That is why Middlesbrough are so frustrated, why fans and pundits alike are angry, and why the wider footballing world has taken this case more seriously than the incident involving Bielsa and Frank Lampard’s Derby County. Ahead of two play-off semi-finals no less, too.

At the time, Bielsa himself argued that such practices were commonplace in football across the world and even delivered a remarkable press conference detailing the extensive analytical work he undertook on opponents.

While some admired his honesty and obsessive attention to detail, others believed it undermined sporting integrity and crossed an unwritten code between clubs.

Southampton’s Middlesbrough spying is much worse than Leeds’ incident

Tonda Eckert

In 2019, the backlash was enormous, particularly because Leeds were embroiled in a high-stakes promotion battle and already viewed as one of the Championship’s biggest clubs. But now it is inarguably worse when rules are in place and the debate is less about interpretation.

If Southampton are found to have breached the post-Spygate regulations for this incident with Middlesbrough , the EFL would be dealing with an alleged violation of a rule specifically created in response to Bielsa’s actions in 2019.

Ironically, the rule Southampton are accused of breaking is one Bielsa himself never actually had in place during the original scandal. Had it been there, it’s hard to imagine the Argentine would have ever signed off on his Leeds team spying in any way, shape, or form.

It highlights how transformative the Leeds controversy ultimately became for English football governance. Bielsa’s incident exposed a regulatory gap, while the EFL’s response ensured there would be far less room for interpretation should anything similar happen again.

What happens now is most interesting, given the rule change. Will Southampton make it to Wembley? Will they win the play-offs? What will the reaction be if they do after such controversy? We shall know more very soon.